diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8c932c47c9..49b0a5f97f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,129 @@
+2023.12.??
+==========
+
+Releases: libmamba 2.0.0alpha0, libmambapy 2.0.0alpha0, micromamba 2.0.0alpha0
+
+Enhancements:
+
+- [all] Context: not a singleton by @Klaim in https://github.com/mamba-org/mamba/pull/2615
+- [libmamba] Add CondaURL by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2805
+- [micromamba] Add env update by @Hind-M in https://github.com/mamba-org/mamba/pull/2827
+- [micromamba] Adding locks for cache directories by @rmittal87 in https://github.com/mamba-org/mamba/pull/2811
+- [micromamba] Refactor tests by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2829
+- [all] No ugly kenum by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2831
+- [libmamba, micromamba] Add Nushell activation support by cvanelteren in https://github.com/mamba-org/mamba/pull/2693
+- [libmamba] Support $var syntax in .condarc by @jonashaag in https://github.com/mamba-org/mamba/pull/2833
+- [libmamba] Handle null and false noarch values by @gabrielsimoes in https://github.com/mamba-org/mamba/pull/2835
+- [libmamba] Add CondaURL::pretty_str by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2830
+- [libmamba, micromamba] Channel cleanup by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2832
+- [libmamba] Authenfitication split user and password by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2849
+- [libmamba] Improved static build error message by @JohanMabille in https://github.com/mamba-org/mamba/pull/2850
+- [libmamba] Add local channels test by @Hind-M in https://github.com/mamba-org/mamba/pull/2853
+- [libmamba, micromamba] Don't force MSVC_RUNTIME by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2861
+- [libmamba] Build micromamba with /MD by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2862
+- [micromamba] Add comments in micromamba repoquery by @Hind-M in https://github.com/mamba-org/mamba/pull/2863
+- [libmamba, micromamba] Fix Posix shell on Windows by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2803
+- [libmamba, libmambapy] Further improve micromamba search output by @delsner in https://github.com/mamba-org/mamba/pull/2823
+- [libmamba] Minor Channel refactoring by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2852
+- [libmamba] path_to_url percent encoding by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2867
+- [libmamba] Change libsolv static lib name by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2876
+- [libmamba, libmambapy] Download by @JohanMabille in https://github.com/mamba-org/mamba/pull/2844
+- [libmamba, micromamba] Use CMake targets for reproc by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2883
+- [micromamba] Add mamba tests by @Hind-M in https://github.com/mamba-org/mamba/pull/2877
+- [libmamba] Add FindLibsolv.cmake by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2886
+- [libmamba] Read repodata.json using nl::json (rerun) by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2753
+- [libmamba, micromamba] Filesystem library by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2879
+- [libmamba] Header cleanup filesystem follow-up by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2894
+- [all] Add multiple queries to repoquery search by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2897
+- [all] Add ChannelSpec by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2870
+- [micromamba] Make some fixture local by @JohanMabille in https://github.com/mamba-org/mamba/pull/2919
+- [libmamba] Print error code if run fails by @jonashaag in https://github.com/mamba-org/mamba/pull/2848
+- [all] Added PackageFetcher by @JohanMabille in https://github.com/mamba-org/mamba/pull/2917
+- [libmamba] return architecture levels for micromamba by @isuruf in https://github.com/mamba-org/mamba/pull/2921
+- [all] Resolve ChannelSpec into a Channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2899
+- [libmamba] Factorize Win user folder function between files by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2925
+- [libmamba, libmambapy] Combine dev environments by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2937
+- [libmamba, micromamba] Refactor win encoding conversion by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2939
+- [micromamba] Move reposerver tests to micromamba by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2941
+- [micromamba] Remove mamba by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2942
+- [all] Dev workflow by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2948
+- [libmamba, micromamba] Add refactor getenv setenv unsetenv by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2944
+- [all] Explicit and smart CMake target by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2935
+- [libmamba, micromamba] Rename env functions by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2954
+- [libmambapy] Modularize libmambapy by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2960
+- [libmamba] Environment map by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2967
+- [libmamba] Add envrionment cleaner test fixtures by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2973
+- [all] Update dependencies on OSX by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2976
+- [all] Channel initialization by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2953
+- [libmamba] Add weakening_map by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2981
+- [libmamba, micromamba] Refactor env directories by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2983
+- [libmamba] Enable new repodata parser by default by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2989
+- [libmamba] Allow overriding archspec by @isuruf in https://github.com/mamba-org/mamba/pull/2966
+- [libmamba] Add Python-like set operations to flat_set by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2557
+- [libmamba, micromamba] Migrate expand/shrink_home by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2990
+- [libmamba, micromamba] Refactor env::which by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2997
+- [all] Migrate Channel::make_channel to resolve multi channels by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2986
+- [all] Move core/channel > specs/channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3000
+- [libmamba, libmambapy] Remove ChannelContext ctor by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3002
+- [libmamba] Improve ChannelContext and Channel by @AntoinePrv in xhttps://github.com/mamba-org/mamba/pull/3003
+- [all] Remove ChanelContext context capture by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3015
+- [libmamba, libmambapy] Bind Channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3001
+- [libmamba, micromamba] Default to hide credentials by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3017
+- [libmamba] Validation QA by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3022
+- [libmamba, micromamba] Refactor (some) OpenSSL functions by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3024
+- [libmamba] Use std::array<std::byte, ...> by @AntoinePRv in https://github.com/mamba-org/mamba/pull/3037
+- [libmambapy] Bind ChannelContext by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3034
+- [libmamba, micromamba] Default to conda-forge channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3035
+- [libamba, libmambapy] Split validate.[ch]pp by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3041
+- [libmamba] Remove duplicate function by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3042
+- [libmamba, libmambapy] MatchSpec small improvements by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3043
+- [all] Plug ChannelSpec in MatchSpec by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3046
+- [libmamba] Drop unneeded dependencies by @opoplawski in https://github.com/mamba-org/mamba/pull/3016
+- [all] Change MatchSpec::parse to named constructor by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3048
+- [libmamba, libmambapy] restore use_default_signal_handler flag for libmambapy by @dholth in https://github.com/mamba-org/mamba/pull/3028
+- [micromamba] Added mamba as dynamic build of micromamba by @JohanMabille in https://github.com/mamba-org/mamba/pull/3060
+
+Bug fixes:
+
+- [libmambapy] fix subs by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2817
+- [libmamba, micromamba] Fix linking on Windows when Scripts folder is missing by @dalcinl in https://github.com/mamba-org/mamba/pull/2825
+- [libmamba] added support for empty lines in dependency file in txt format by @rmittal87 in https://github.com/mamba-org/mamba/pull/2812
+- [libmamba] Fix local channels location by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2851
+- [libmamba] Fixed libmamba tests static build by @JohanMabille in https://github.com/mamba-org/mamba/pull/2855
+- [micromamba] Fix win test micro.mamba.pm by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2888
+- [libmamba, micromamba] Add CI test for local channels by @Hind-M in https://github.com/mamba-org/mamba/pull/2854
+- [micromamba] Fixed "micromamba package transmute names files going from .conda -> .tar.bz2 incorrectly" by @mariusvniekerk in https://github.com/mamba-org/mamba/issues/2911
+- [libmamba] Nushell hotfix by @cvanelteren https://github.com/mamba-org/mamba/pull/2841
+- [libmamba] Added missing dependency in libmambaConfig.cmake.in by @JohanMabille in https://github.com/mamba-org/mamba/pull/2916
+- [libmamba] Allow defaults::* spec by @isuruf in https://github.com/mamba-org/mamba/pull/2927
+- [libmamba] https://github.com/mamba-org/mamba/pull/2929 by @bruchim-cisco in https://github.com/mamba-org/mamba/pull/2929
+- [libmamba] Fix channels with slashes regression by @isuruf in https://github.com/mamba-org/mamba/pull/2926
+- [micromamba] Fix micromamba test dependency conda-package-handling by @rominf in https://github.com/mamba-org/mamba/pull/2945
+- [libmamba, libmambapy] fix: Parse remote_connect_timeout_secs as a double by @jjerphan in https://github.com/mamba-org/mamba/pull/2949
+- [libmamba] Add mirrors by @Hind-M in https://github.com/mamba-org/mamba/pull/2795
+- [all] Add cmake-format by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2962
+- [micromamba] removed dependency on conda-index by @JohanMabille in https://github.com/mamba-org/mamba/pull/2964
+- [libmamba] Fixed move semantics of DownloadAttempt by @JohanMabille in https://github.com/mamba-org/mamba/pull/2963
+- [libmamba] Nu 0.87.0 by @cvanelteren in https://github.com/mamba-org/mamba/pull/2984
+- [libmamba] fix config precedence for base env by @0xbe7a in https://github.com/mamba-org/mamba/pull/3009
+- [libmamba] Fix libmamba cmake version file by @opoplawski in https://github.com/mamba-org/mamba/pull/3013
+
+CI fixes and doc:
+
+- [micromamba] Build micromamba win with feedstock by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2859
+- [micromamba] Update GitHub Actions steps to open Issues for failed scheduled jobs by @jdblischak in https://github.com/mamba-org/mamba/pull/2884
+- [micromamba] Fix Ci by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2889
+- [micromamba] Mark Anaconda channels as unsupported by @jonashaag in https://github.com/mamba-org/mamba/pull/2904
+- [micromamba] Fix nodefaults in documentation by @jonashaag in https://github.com/mamba-org/mamba/pull/2809
+- [micromamba] Improve install instruction by @jonashaag in https://github.com/mamba-org/mamba/pull/2908
+- [libmambapy] Refactor CI and libamambapy tests (on Unix) by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2952
+- [libmambapy] Refactor CI and libamambapy tests (on Win) by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2955
+- [all] Simplify and correct development documention by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2975
+- [all] Add install from source instructions by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2977
+- [all] update readme install link by @artifical-agent in https://github.com/mamba-org/mamba/pull/2980
+- [all] Fail fast except on debug runs by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2985
+
+
 2023.09.05
 ==========
 
diff --git a/libmamba/CHANGELOG.md b/libmamba/CHANGELOG.md
index 821f1ff9b0..46f9c0c465 100644
--- a/libmamba/CHANGELOG.md
+++ b/libmamba/CHANGELOG.md
@@ -1,3 +1,199 @@
+libmamba 2.0.0alpha0 (December 14, 2023)
+========================================
+
+Enhancements:
+
+- Context: not a singleton by @Klaim in https://github.com/mamba-org/mamba/pull/2615
+- Add CondaURL by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2805
+- No ugly kenum by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2831
+- Add Nushell activation support by cvanelteren in https://github.com/mamba-org/mamba/pull/2693
+- Support $var syntax in .condarc by @jonashaag in https://github.com/mamba-org/mamba/pull/2833
+- Handle null and false noarch values by @gabrielsimoes in https://github.com/mamba-org/mamba/pull/2835
+- Add CondaURL::pretty_str by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2830
+- Channel cleanup by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2832
+- Authenfitication split user and password by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2849
+- Improved static build error message by @JohanMabille in https://github.com/mamba-org/mamba/pull/2850
+- Add local channels test by @Hind-M in https://github.com/mamba-org/mamba/pull/2853
+- Don't force MSVC_RUNTIME by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2861
+- Build micromamba with /MD by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2862
+- Fix Posix shell on Windows by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2803
+- Further improve micromamba search output by @delsner in https://github.com/mamba-org/mamba/pull/2823
+- Minor Channel refactoring by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2852
+- path_to_url percent encoding by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2867
+- Change libsolv static lib name by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2876
+- Download by @JohanMabille in https://github.com/mamba-org/mamba/pull/2844
+- Use CMake targets for reproc by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2883
+- Add FindLibsolv.cmake by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2886
+- Read repodata.json using nl::json (rerun) by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2753
+- Filesystem library by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2879
+- Header cleanup filesystem follow-up by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2894
+- Add multiple queries to repoquery search by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2897
+- Add ChannelSpec by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2870
+- Print error code if run fails by @jonashaag in https://github.com/mamba-org/mamba/pull/2848
+- Added PackageFetcher by @JohanMabille in https://github.com/mamba-org/mamba/pull/2917
+- return architecture levels for micromamba by @isuruf in https://github.com/mamba-org/mamba/pull/2921
+- Resolve ChannelSpec into a Channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2899
+- Factorize Win user folder function between files by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2925
+- Combine dev environments by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2937
+- Refactor win encoding conversion by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2939
+- Dev workflow by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2948
+- Add refactor getenv setenv unsetenv by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2944
+- Explicit and smart CMake target by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2935
+- Rename env functions by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2954
+- Environment map by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2967
+- Add envrionment cleaner test fixtures by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2973
+- Update dependencies on OSX by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2976
+- Channel initialization by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2953
+- Add weakening_map by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2981
+- Refactor env directories by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2983
+- Enable new repodata parser by default by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2989
+- Allow overriding archspec by @isuruf in https://github.com/mamba-org/mamba/pull/2966
+- Add Python-like set operations to flat_set by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2557
+- Migrate expand/shrink_home by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2990
+- Refactor env::which by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2997
+- Migrate Channel::make_channel to resolve multi channels by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2986
+- Move core/channel > specs/channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3000
+- Remove ChannelContext ctor by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3002
+- Improve ChannelContext and Channel by @AntoinePrv in xhttps://github.com/mamba-org/mamba/pull/3003
+- Remove ChanelContext context capture by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3015
+- Bind Channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3001
+- Default to hide credentials by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3017
+- Validation QA by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3022
+- Refactor (some) OpenSSL functions by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3024
+- Use std::array<std::byte, ...> by @AntoinePRv in https://github.com/mamba-org/mamba/pull/3037
+- Default to conda-forge channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3035
+- Remove duplicate function by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3042
+- MatchSpec small improvements by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3043
+- Plug ChannelSpec in MatchSpec by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3046
+- Drop unneeded dependencies by @opoplawski in https://github.com/mamba-org/mamba/pull/3016
+- Change MatchSpec::parse to named constructor by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3048
+- restore use_default_signal_handler flag for libmambapy by @dholth in https://github.com/mamba-org/mamba/pull/3028
+
+Bug fixes:
+
+- Fix linking on Windows when Scripts folder is missing by @dalcinl in https://github.com/mamba-org/mamba/pull/2825
+- added support for empty lines in dependency file in txt format by @rmittal87 in https://github.com/mamba-org/mamba/pull/2812
+- Fix local channels location by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2851
+- Fixed libmamba tests static build by @JohanMabille in https://github.com/mamba-org/mamba/pull/2855
+- Add CI test for local channels by @Hind-M in https://github.com/mamba-org/mamba/pull/2854
+- Nushell hotfix by @cvanelteren https://github.com/mamba-org/mamba/pull/2841
+- Added missing dependency in libmambaConfig.cmake.in by @JohanMabille in https://github.com/mamba-org/mamba/pull/2916
+- Allow defaults::* spec by @isuruf in https://github.com/mamba-org/mamba/pull/2927
+- https://github.com/mamba-org/mamba/pull/2929 by @bruchim-cisco in https://github.com/mamba-org/mamba/pull/2929
+- Fix channels with slashes regression by @isuruf in https://github.com/mamba-org/mamba/pull/2926
+- fix: Parse remote_connect_timeout_secs as a double by @jjerphan in https://github.com/mamba-org/mamba/pull/2949
+- Add mirrors by @Hind-M in https://github.com/mamba-org/mamba/pull/2795
+- Add cmake-format by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2962
+- Fixed move semantics of DownloadAttempt by @JohanMabille in https://github.com/mamba-org/mamba/pull/2963
+- Nu 0.87.0 by @cvanelteren in https://github.com/mamba-org/mamba/pull/2984
+- fix config precedence for base env by @0xbe7a in https://github.com/mamba-org/mamba/pull/3009
+- Fix libmamba cmake version file by @opoplawski in https://github.com/mamba-org/mamba/pull/3013
+
+CI fixes and doc:
+
+- Simplify and correct development documention by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2975
+- Add install from source instructions by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2977
+- update readme install link by @artifical-agent in https://github.com/mamba-org/mamba/pull/2980
+- Fail fast except on debug runs by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2985
+
+libmamba 2.0.0alpha0 (December 14, 2023)
+========================================
+
+Enhancements:
+
+- Context: not a singleton by @Klaim in https://github.com/mamba-org/mamba/pull/2615
+- Add CondaURL by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2805
+- No ugly kenum by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2831
+- Add Nushell activation support by cvanelteren in https://github.com/mamba-org/mamba/pull/2693
+- Support $var syntax in .condarc by @jonashaag in https://github.com/mamba-org/mamba/pull/2833
+- Handle null and false noarch values by @gabrielsimoes in https://github.com/mamba-org/mamba/pull/2835
+- Add CondaURL::pretty_str by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2830
+- Channel cleanup by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2832
+- Authenfitication split user and password by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2849
+- Improved static build error message by @JohanMabille in https://github.com/mamba-org/mamba/pull/2850
+- Add local channels test by @Hind-M in https://github.com/mamba-org/mamba/pull/2853
+- Don't force MSVC_RUNTIME by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2861
+- Build micromamba with /MD by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2862
+- Fix Posix shell on Windows by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2803
+- Further improve micromamba search output by @delsner in https://github.com/mamba-org/mamba/pull/2823
+- Minor Channel refactoring by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2852
+- path_to_url percent encoding by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2867
+- Change libsolv static lib name by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2876
+- Download by @JohanMabille in https://github.com/mamba-org/mamba/pull/2844
+- Use CMake targets for reproc by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2883
+- Add FindLibsolv.cmake by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2886
+- Read repodata.json using nl::json (rerun) by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2753
+- Filesystem library by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2879
+- Header cleanup filesystem follow-up by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2894
+- Add multiple queries to repoquery search by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2897
+- Add ChannelSpec by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2870
+- Print error code if run fails by @jonashaag in https://github.com/mamba-org/mamba/pull/2848
+- Added PackageFetcher by @JohanMabille in https://github.com/mamba-org/mamba/pull/2917
+- return architecture levels for micromamba by @isuruf in https://github.com/mamba-org/mamba/pull/2921
+- Resolve ChannelSpec into a Channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2899
+- Factorize Win user folder function between files by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2925
+- Combine dev environments by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2937
+- Refactor win encoding conversion by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2939
+- Dev workflow by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2948
+- Add refactor getenv setenv unsetenv by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2944
+- Explicit and smart CMake target by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2935
+- Rename env functions by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2954
+- Environment map by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2967
+- Add envrionment cleaner test fixtures by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2973
+- Update dependencies on OSX by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2976
+- Channel initialization by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2953
+- Add weakening_map by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2981
+- Refactor env directories by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2983
+- Enable new repodata parser by default by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2989
+- Allow overriding archspec by @isuruf in https://github.com/mamba-org/mamba/pull/2966
+- Add Python-like set operations to flat_set by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2557
+- Migrate expand/shrink_home by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2990
+- Refactor env::which by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2997
+- Migrate Channel::make_channel to resolve multi channels by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2986
+- Move core/channel > specs/channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3000
+- Remove ChannelContext ctor by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3002
+- Improve ChannelContext and Channel by @AntoinePrv in xhttps://github.com/mamba-org/mamba/pull/3003
+- Remove ChanelContext context capture by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3015
+- Bind Channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3001
+- Default to hide credentials by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3017
+- Validation QA by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3022
+- Refactor (some) OpenSSL functions by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3024
+- Use std::array<std::byte, ...> by @AntoinePRv in https://github.com/mamba-org/mamba/pull/3037
+- Default to conda-forge channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3035
+- Remove duplicate function by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3042
+- MatchSpec small improvements by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3043
+- Plug ChannelSpec in MatchSpec by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3046
+- Drop unneeded dependencies by @opoplawski in https://github.com/mamba-org/mamba/pull/3016
+- Change MatchSpec::parse to named constructor by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3048
+- restore use_default_signal_handler flag for libmambapy by @dholth in https://github.com/mamba-org/mamba/pull/3028
+
+Bug fixes:
+
+- Fix linking on Windows when Scripts folder is missing by @dalcinl in https://github.com/mamba-org/mamba/pull/2825
+- added support for empty lines in dependency file in txt format by @rmittal87 in https://github.com/mamba-org/mamba/pull/2812
+- Fix local channels location by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2851
+- Fixed libmamba tests static build by @JohanMabille in https://github.com/mamba-org/mamba/pull/2855
+- Add CI test for local channels by @Hind-M in https://github.com/mamba-org/mamba/pull/2854
+- Nushell hotfix by @cvanelteren https://github.com/mamba-org/mamba/pull/2841
+- Added missing dependency in libmambaConfig.cmake.in by @JohanMabille in https://github.com/mamba-org/mamba/pull/2916
+- Allow defaults::* spec by @isuruf in https://github.com/mamba-org/mamba/pull/2927
+- https://github.com/mamba-org/mamba/pull/2929 by @bruchim-cisco in https://github.com/mamba-org/mamba/pull/2929
+- Fix channels with slashes regression by @isuruf in https://github.com/mamba-org/mamba/pull/2926
+- fix: Parse remote_connect_timeout_secs as a double by @jjerphan in https://github.com/mamba-org/mamba/pull/2949
+- Add mirrors by @Hind-M in https://github.com/mamba-org/mamba/pull/2795
+- Add cmake-format by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2962
+- Fixed move semantics of DownloadAttempt by @JohanMabille in https://github.com/mamba-org/mamba/pull/2963
+- Nu 0.87.0 by @cvanelteren in https://github.com/mamba-org/mamba/pull/2984
+- fix config precedence for base env by @0xbe7a in https://github.com/mamba-org/mamba/pull/3009
+- Fix libmamba cmake version file by @opoplawski in https://github.com/mamba-org/mamba/pull/3013
+
+CI fixes and doc:
+
+- Simplify and correct development documention by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2975
+- Add install from source instructions by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2977
+- update readme install link by @artifical-agent in https://github.com/mamba-org/mamba/pull/2980
+- Fail fast except on debug runs by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2985
+
 libmamba 1.5.1 (September 05, 2023)
 ===================================
 
diff --git a/libmamba/include/mamba/version.hpp b/libmamba/include/mamba/version.hpp
index 6ec78afedf..bba4d8c026 100644
--- a/libmamba/include/mamba/version.hpp
+++ b/libmamba/include/mamba/version.hpp
@@ -10,9 +10,9 @@
 #include <array>
 #include <string>
 
-#define LIBMAMBA_VERSION_MAJOR 1
-#define LIBMAMBA_VERSION_MINOR 5
-#define LIBMAMBA_VERSION_PATCH 1
+#define LIBMAMBA_VERSION_MAJOR 2
+#define LIBMAMBA_VERSION_MINOR 0
+#define LIBMAMBA_VERSION_PATCH 0
 
 // Binary version
 #define LIBMAMBA_BINARY_CURRENT 2
diff --git a/libmambapy/CHANGELOG.md b/libmambapy/CHANGELOG.md
index a0e3e9fe1f..5e987e80f1 100644
--- a/libmambapy/CHANGELOG.md
+++ b/libmambapy/CHANGELOG.md
@@ -1,3 +1,93 @@
+libmambapy 2.0.0alpha0 (December 14, 2023)
+==========================================
+
+Enhancements:
+
+- Context: not a singleton by @Klaim in https://github.com/mamba-org/mamba/pull/2615
+- No ugly kenum by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2831
+- Further improve micromamba search output by @delsner in https://github.com/mamba-org/mamba/pull/2823
+- Download by @JohanMabille in https://github.com/mamba-org/mamba/pull/2844
+- Add multiple queries to repoquery search by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2897
+- Add ChannelSpec by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2870
+- Added PackageFetcher by @JohanMabille in https://github.com/mamba-org/mamba/pull/2917
+- Resolve ChannelSpec into a Channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2899
+- Combine dev environments by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2937
+- Dev workflow by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2948
+- Explicit and smart CMake target by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2935
+- Modularize libmambapy by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2960
+- Update dependencies on OSX by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2976
+- Channel initialization by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2953
+- Migrate Channel::make_channel to resolve multi channels by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2986
+- Move core/channel > specs/channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3000
+- Remove ChannelContext ctor by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3002
+- Remove ChanelContext context capture by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3015
+- Bind Channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3001
+- Bind ChannelContext by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3034
+- MatchSpec small improvements by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3043
+- Plug ChannelSpec in MatchSpec by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3046
+- Change MatchSpec::parse to named constructor by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3048
+- restore use_default_signal_handler flag for libmambapy by @dholth in https://github.com/mamba-org/mamba/pull/3028
+
+Bug fixes:
+
+- fix subs by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2817
+- fix: Parse remote_connect_timeout_secs as a double by @jjerphan in https://github.com/mamba-org/mamba/pull/2949
+- Add cmake-format by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2962
+
+CI fixes and doc:
+
+- Refactor CI and libamambapy tests (on Unix) by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2952
+- Refactor CI and libamambapy tests (on Win) by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2955
+- Simplify and correct development documention by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2975
+- Add install from source instructions by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2977
+- update readme install link by @artifical-agent in https://github.com/mamba-org/mamba/pull/2980
+- Fail fast except on debug runs by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2985
+
+libmambapy 2.0.0alpha0 (December 14, 2023)
+==========================================
+
+Enhancements:
+
+- Context: not a singleton by @Klaim in https://github.com/mamba-org/mamba/pull/2615
+- No ugly kenum by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2831
+- Further improve micromamba search output by @delsner in https://github.com/mamba-org/mamba/pull/2823
+- Download by @JohanMabille in https://github.com/mamba-org/mamba/pull/2844
+- Add multiple queries to repoquery search by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2897
+- Add ChannelSpec by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2870
+- Added PackageFetcher by @JohanMabille in https://github.com/mamba-org/mamba/pull/2917
+- Resolve ChannelSpec into a Channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2899
+- Combine dev environments by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2937
+- Dev workflow by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2948
+- Explicit and smart CMake target by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2935
+- Modularize libmambapy by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2960
+- Update dependencies on OSX by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2976
+- Channel initialization by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2953
+- Migrate Channel::make_channel to resolve multi channels by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2986
+- Move core/channel > specs/channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3000
+- Remove ChannelContext ctor by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3002
+- Remove ChanelContext context capture by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3015
+- Bind Channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3001
+- Bind ChannelContext by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3034
+- MatchSpec small improvements by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3043
+- Plug ChannelSpec in MatchSpec by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3046
+- Change MatchSpec::parse to named constructor by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3048
+- restore use_default_signal_handler flag for libmambapy by @dholth in https://github.com/mamba-org/mamba/pull/3028
+
+Bug fixes:
+
+- fix subs by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2817
+- fix: Parse remote_connect_timeout_secs as a double by @jjerphan in https://github.com/mamba-org/mamba/pull/2949
+- Add cmake-format by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2962
+
+CI fixes and doc:
+
+- Refactor CI and libamambapy tests (on Unix) by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2952
+- Refactor CI and libamambapy tests (on Win) by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2955
+- Simplify and correct development documention by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2975
+- Add install from source instructions by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2977
+- update readme install link by @artifical-agent in https://github.com/mamba-org/mamba/pull/2980
+- Fail fast except on debug runs by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2985
+
 libmambapy 1.5.1 (September 05, 2023)
 =====================================
 
diff --git a/libmambapy/src/libmambapy/version.py b/libmambapy/src/libmambapy/version.py
index a3a41b913b..9e50c8cfcf 100644
--- a/libmambapy/src/libmambapy/version.py
+++ b/libmambapy/src/libmambapy/version.py
@@ -1,2 +1,2 @@
-version_info = (1, 5, 1)
+version_info = ("2", "0", "0alpha0")
 __version__ = ".".join(map(str, version_info))
diff --git a/libmambapy/src/libmambapy/version.py.tmpl b/libmambapy/src/libmambapy/version.py.tmpl
index 27bfa4bec8..cfde257b58 100644
--- a/libmambapy/src/libmambapy/version.py.tmpl
+++ b/libmambapy/src/libmambapy/version.py.tmpl
@@ -1,2 +1,2 @@
-version_info = ({{ version_major }}, {{ version_minor }}, {{ version_patch }})
+version_info = ("{{ version_major }}", "{{ version_minor }}", "{{ version_patch }}")
 __version__ = ".".join(map(str, version_info))
diff --git a/micromamba/CHANGELOG.md b/micromamba/CHANGELOG.md
index 20f9c64a04..bdb20ae2b1 100644
--- a/micromamba/CHANGELOG.md
+++ b/micromamba/CHANGELOG.md
@@ -1,3 +1,139 @@
+micromamba 2.0.0alpha0 (December 14, 2023)
+==========================================
+
+Enhancements:
+
+- Context: not a singleton by @Klaim in https://github.com/mamba-org/mamba/pull/2615
+- Add env update by @Hind-M in https://github.com/mamba-org/mamba/pull/2827
+- Adding locks for cache directories by @rmittal87 in https://github.com/mamba-org/mamba/pull/2811
+- Refactor tests by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2829
+- No ugly kenum by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2831
+- Add Nushell activation support by cvanelteren in https://github.com/mamba-org/mamba/pull/2693
+- Channel cleanup by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2832
+- Don't force MSVC_RUNTIME by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2861
+- Add comments in micromamba repoquery by @Hind-M in https://github.com/mamba-org/mamba/pull/2863
+- Fix Posix shell on Windows by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2803
+- Use CMake targets for reproc by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2883
+- Add mamba tests by @Hind-M in https://github.com/mamba-org/mamba/pull/2877
+- Filesystem library by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2879
+- Add multiple queries to repoquery search by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2897
+- Add ChannelSpec by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2870
+- Make some fixture local by @JohanMabille in https://github.com/mamba-org/mamba/pull/2919
+- Added PackageFetcher by @JohanMabille in https://github.com/mamba-org/mamba/pull/2917
+- Resolve ChannelSpec into a Channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2899
+- Refactor win encoding conversion by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2939
+- Move reposerver tests to micromamba by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2941
+- Remove mamba by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2942
+- Dev workflow by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2948
+- Add refactor getenv setenv unsetenv by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2944
+- Explicit and smart CMake target by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2935
+- Rename env functions by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2954
+- Update dependencies on OSX by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2976
+- Channel initialization by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2953
+- Refactor env directories by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2983
+- Migrate expand/shrink_home by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2990
+- Refactor env::which by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2997
+- Migrate Channel::make_channel to resolve multi channels by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2986
+- Move core/channel > specs/channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3000
+- Remove ChanelContext context capture by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3015
+- Default to hide credentials by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3017
+- Refactor (some) OpenSSL functions by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3024
+- Default to conda-forge channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3035
+- Plug ChannelSpec in MatchSpec by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3046
+- Change MatchSpec::parse to named constructor by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3048
+- Added mamba as dynamic build of micromamba by @JohanMabille in https://github.com/mamba-org/mamba/pull/3060
+
+Bug fixes:
+
+- Fix linking on Windows when Scripts folder is missing by @dalcinl in https://github.com/mamba-org/mamba/pull/2825
+- Fix win test micro.mamba.pm by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2888
+- Add CI test for local channels by @Hind-M in https://github.com/mamba-org/mamba/pull/2854
+- Fixed "micromamba package transmute names files going from .conda -> .tar.bz2 incorrectly" by @mariusvniekerk in https://github.com/mamba-org/mamba/issues/2911
+- Fix micromamba test dependency conda-package-handling by @rominf in https://github.com/mamba-org/mamba/pull/2945
+- Add cmake-format by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2962
+- removed dependency on conda-index by @JohanMabille in https://github.com/mamba-org/mamba/pull/2964
+
+CI fixes and doc:
+
+- Build micromamba win with feedstock by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2859
+- Update GitHub Actions steps to open Issues for failed scheduled jobs by @jdblischak in https://github.com/mamba-org/mamba/pull/2884
+- Fix Ci by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2889
+- Mark Anaconda channels as unsupported by @jonashaag in https://github.com/mamba-org/mamba/pull/2904
+- Fix nodefaults in documentation by @jonashaag in https://github.com/mamba-org/mamba/pull/2809
+- Improve install instruction by @jonashaag in https://github.com/mamba-org/mamba/pull/2908
+- Simplify and correct development documention by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2975
+- Add install from source instructions by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2977
+- update readme install link by @artifical-agent in https://github.com/mamba-org/mamba/pull/2980
+- Fail fast except on debug runs by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2985
+
+micromamba 2.0.0alpha0 (December 14, 2023)
+==========================================
+
+Enhancements:
+
+- Context: not a singleton by @Klaim in https://github.com/mamba-org/mamba/pull/2615
+- Add env update by @Hind-M in https://github.com/mamba-org/mamba/pull/2827
+- Adding locks for cache directories by @rmittal87 in https://github.com/mamba-org/mamba/pull/2811
+- Refactor tests by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2829
+- No ugly kenum by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2831
+- Add Nushell activation support by cvanelteren in https://github.com/mamba-org/mamba/pull/2693
+- Channel cleanup by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2832
+- Don't force MSVC_RUNTIME by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2861
+- Add comments in micromamba repoquery by @Hind-M in https://github.com/mamba-org/mamba/pull/2863
+- Fix Posix shell on Windows by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2803
+- Use CMake targets for reproc by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2883
+- Add mamba tests by @Hind-M in https://github.com/mamba-org/mamba/pull/2877
+- Filesystem library by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2879
+- Add multiple queries to repoquery search by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2897
+- Add ChannelSpec by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2870
+- Make some fixture local by @JohanMabille in https://github.com/mamba-org/mamba/pull/2919
+- Added PackageFetcher by @JohanMabille in https://github.com/mamba-org/mamba/pull/2917
+- Resolve ChannelSpec into a Channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2899
+- Refactor win encoding conversion by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2939
+- Move reposerver tests to micromamba by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2941
+- Remove mamba by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2942
+- Dev workflow by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2948
+- Add refactor getenv setenv unsetenv by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2944
+- Explicit and smart CMake target by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2935
+- Rename env functions by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2954
+- Update dependencies on OSX by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2976
+- Channel initialization by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2953
+- Refactor env directories by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2983
+- Migrate expand/shrink_home by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2990
+- Refactor env::which by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2997
+- Migrate Channel::make_channel to resolve multi channels by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2986
+- Move core/channel > specs/channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3000
+- Remove ChanelContext context capture by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3015
+- Default to hide credentials by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3017
+- Refactor (some) OpenSSL functions by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3024
+- Default to conda-forge channel by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3035
+- Plug ChannelSpec in MatchSpec by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3046
+- Change MatchSpec::parse to named constructor by @AntoinePrv in https://github.com/mamba-org/mamba/pull/3048
+- Added mamba as dynamic build of micromamba by @JohanMabille in https://github.com/mamba-org/mamba/pull/3060
+
+Bug fixes:
+
+- Fix linking on Windows when Scripts folder is missing by @dalcinl in https://github.com/mamba-org/mamba/pull/2825
+- Fix win test micro.mamba.pm by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2888
+- Add CI test for local channels by @Hind-M in https://github.com/mamba-org/mamba/pull/2854
+- Fixed "micromamba package transmute names files going from .conda -> .tar.bz2 incorrectly" by @mariusvniekerk in https://github.com/mamba-org/mamba/issues/2911
+- Fix micromamba test dependency conda-package-handling by @rominf in https://github.com/mamba-org/mamba/pull/2945
+- Add cmake-format by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2962
+- removed dependency on conda-index by @JohanMabille in https://github.com/mamba-org/mamba/pull/2964
+
+CI fixes and doc:
+
+- Build micromamba win with feedstock by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2859
+- Update GitHub Actions steps to open Issues for failed scheduled jobs by @jdblischak in https://github.com/mamba-org/mamba/pull/2884
+- Fix Ci by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2889
+- Mark Anaconda channels as unsupported by @jonashaag in https://github.com/mamba-org/mamba/pull/2904
+- Fix nodefaults in documentation by @jonashaag in https://github.com/mamba-org/mamba/pull/2809
+- Improve install instruction by @jonashaag in https://github.com/mamba-org/mamba/pull/2908
+- Simplify and correct development documention by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2975
+- Add install from source instructions by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2977
+- update readme install link by @artifical-agent in https://github.com/mamba-org/mamba/pull/2980
+- Fail fast except on debug runs by @AntoinePrv in https://github.com/mamba-org/mamba/pull/2985
+
 micromamba 1.5.1 (September 05, 2023)
 =====================================
 
diff --git a/micromamba/src/version.hpp b/micromamba/src/version.hpp
index 110c736b39..2658edab30 100644
--- a/micromamba/src/version.hpp
+++ b/micromamba/src/version.hpp
@@ -10,9 +10,9 @@
 #include <array>
 #include <string>
 
-#define UMAMBA_VERSION_MAJOR 1
-#define UMAMBA_VERSION_MINOR 5
-#define UMAMBA_VERSION_PATCH 1
+#define UMAMBA_VERSION_MAJOR 2
+#define UMAMBA_VERSION_MINOR 0
+#define UMAMBA_VERSION_PATCH 0
 
 // Binary version
 #define UMAMBA_BINARY_CURRENT 1