note please only use our provided packages (green buttons tar.xz and dmg) not the auto-created tarballs from github (grey buttons, zip and tar.gz). the latter are just git snapshots and will not work!

sha1sum:
0c62bb1a720a2f4b1080177b21e8aa3de686375d darktable-1.6.0.tar.xz
71bac77806be3c0ed19f7bfcfb428bc83344be79 darktable-1.6.0.dmg

new features:

general/misc:

• high DPI monitor support
• signed OSX packages
• map view now allows to only show images from the current collection on the map
• slideshow
• darktable-cli now works without a running X server for use on headless systems
• support for audio notes playback
• sticky preview
• added the option to overwrite files when exporting to disk
• crawler that syncs all xmp files on start
• support huge images (> 32 bit pixel index). darktable can open 26770x13385
  TIFFs and should in theory be able to process arbitrary sized images. don't
  try this on a 32 bit system though!
• lens iop presets are copy/pastable between different images

output:

• tiff read/write rewritten, works on 32-bit float now, supports compression
• allow setting PPI for exported JPEGs, defaulting to 300
• pwstorage libsecret
• use HTTPS when exporting to flickr

darkroom:

• new defringe image operation
• automatic mode for levels module
• allow to disable white balance
• new colour reconstruction mode for highlight recovery that tries to add both
  colour and structure to clipped areas. thanks to a1ex from magic lantern!
• better basecurve tool to create basecurves from raw/jpg pairs
• soft boundaries in sliders
  (right click and type 8 in exposure compensation for example)
• input colour gamut mapping to avoid problems with saturated blues
  causing purple artefacts

colour:

• color conversion speedup (openmp for lcms2 case)
• add linear Rec2020 as a build-in profile
• embedded icc profile support for png/tiff (read/write)

lua scripting:

• copy, move, reset and delete images via lua
• handle progress bars via lua
• limited manipulation of libs an views UI via lua
• import and export styles via lua
• trigger lua when the grouping mode changes
• trigger lua when the overlay mode changes
• trigger lua when the active view changes
• manipulate snapshots via lua
• handle more types of preferences, including enums, directories and file names
• lua API is now versioned:
  use darktable.configuration.check_version to check
• lua API incompatibilities:
  darktable.modules has been removed, use darktable.new_format and
  darktable.new_storage to access the constructors

performance improvements:

• many speed improvements by adding sse code for image operations
• make white balance work faster
• make invert work faster
• much faster exr export with optional compression (multicore support)
• speedup of pfm writing
• speedup of amaze. it is still slow but not as bad as it used to be

internal improvements:

• module parameter introspection
• clang/address-sanitizer/etc compiler warnings fixed
• flip iop used for raw auto-orientation (simplifies code)
• complete rawspeed migration for raw loading

bug fixes:

• hdr bracketing fixes
• masks cleanup and bugfixes
• correct lens detection for compact cameras
• avoid clipping in vignette, lowpass, shadows & highlights, a/b
  channels of colorcontrast and tonecurve

and of course also:

• updated usermanual
• lots of small performance improvements and code cleanup

thanks to our great community and all the contributors for making this possible!
see the development visualised: https://www.youtube.com/watch?v=N-ST2PDcDUg
enjoy the release!

p.s. new cameras supported!

• initial support for x-trans sensors
• new demosaicing algorithms:
  markesteijn for x-trans and vng for x-trans and regular bayer raws

new noise profiles:

• canon eos 700d
• canon eos rebel sl1
• dmc-gh3
• dmc-gm1
• dmc-gx7
• dmc-lx5
• dsc-rx100m2
• dsc-rx100m2
• dsc-rx100m2
• e-m10
• e-pl2
• fuji x-e2
• fuji x-t1
• fuji x100s
• ilce-6000
• ilce-6r
• ilce-7
• ilce-7r
• ilce-7s
• nex-5r
• nikon d40
• nikon d5300
• nikon d610
• nikon d750
• nikon d810
• olympus e-m10
• panasonic dmc-gh3
• panasonic dmc-gh4
• panasonic dmc-gx7
• pentax k100d super

new cameras in rawspeed:

• Canon EOS 7D Mark II
• Canon EOS 10D
• Canon EOS 300D DIGITAL
• Canon EOS D30
• Canon EOS D60
• Canon PowerShot G1
• Canon PowerShot G1 X Mark II
• Canon PowerShot G2
• Canon PowerShot G3
• Canon PowerShot G5
• Canon PowerShot G6
• Canon PowerShot G7 X
• Canon PowerShot Pro1
• Canon PowerShot S120
• Canon PowerShot S30
• Canon PowerShot S40
• Canon PowerShot S45
• Canon PowerShot S50
• Canon PowerShot S60
• Canon PowerShot S70
• Canon PowerShot A610
• Canon PowerShot A620
• Canon PowerShot A640
• Canon PowerShot A650
• Canon PowerShot A720 IS
• Canon PowerShot S3 IS
• Creo/Leaf Leaf Aptus 22(LF3779 )/Hasselblad H1
• EASTMAN KODAK COMPANY KODAK P880 ZOOM DIGITAL CAMERA
• FUJIFILM FinePix E550
• FUJIFILM FinePix E900
• FUJIFILM FinePix F700
• FUJIFILM FinePix F900EXR
• FUJIFILM FinePix HS10 HS11
• FUJIFILM FinePix HS20EXR
• FUJIFILM FinePix HS30EXR
• FUJIFILM FinePix S200EXR
• FUJIFILM FinePixS2Pro
• FUJIFILM FinePix S3Pro
• FUJIFILM FinePix S5000
• FUJIFILM FinePix S5200
• FUJIFILM FinePix S5500
• FUJIFILM FinePix S5600
• FUJIFILM FinePix S5Pro
• FUJIFILM FinePix S6000fd
• FUJIFILM FinePix S6500fd
• FUJIFILM FinePix S9500
• FUJIFILM FinePix S9600
• FUJIFILM FinePix S9600fd
• FUJIFILM FinePix X100
• FUJIFILM IS-1
• FUJIFILM X10
• FUJIFILM X100S
• FUJIFILM X100T
• FUJIFILM X20
• FUJIFILM X30
• FUJIFILM X-A1
• FUJIFILM X-E1
• FUJIFILM X-E2
• FUJIFILM XF1
• FUJIFILM X-M1
• FUJIFILM X-Pro1
• FUJIFILM XQ1
• FUJIFILM X-S1
• FUJIFILM X-T1
• Hasselblad Hasselblad 500 mech.
• Hasselblad Hasselblad H3D
• Kodak DCS Pro SLR/n
• Leaf Credo 40
• Leaf Credo 60
• Leaf Credo 80
• Leaf Leaf AFi-II 7(BT12701 )/Leaf AFi
• Leaf Leaf Aptus 75(LI400146 )/Large Format
• Leaf Leaf Aptus-II 10(LI300019 )/Phase One 645DF
• Leaf Leaf Aptus-II 10R( )/Large Format
• Leaf Leaf Aptus-II 12(LI301306 )/Phase One 645DF/645AF
• Leaf Leaf Aptus-II 5(LI300059 )/Mamiya 645 AFD
• Leaf Leaf Aptus-II 8(LI300247 )/Mamiya 645 AFD
• LEICA DIGILUX 2
• LEICA D-LUX 3
• LEICA D-LUX 6
• LEICA V-LUX 1
• Mamiya-OP Co.,Ltd. MAMIYA ZD
• MINOLTA DIMAGE 5
• MINOLTA DIMAGE 7
• MINOLTA DIMAGE 7HI
• MINOLTA DIMAGE 7I
• MINOLTA DIMAGE A1
• MINOLTA DIMAGE A2
• MINOLTA DIMAGE A200
• MINOLTA DYNAX 5D
• MINOLTA DYNAX 7D
• NIKON CORPORATION NIKON 1 J4
• NIKON CORPORATION NIKON D1X
• NIKON CORPORATION NIKON D4S
• NIKON CORPORATION NIKON D7100
• NIKON CORPORATION NIKON D750
• NIKON CORPORATION NIKON D800
• NIKON CORPORATION NIKON D810
• OLYMPUS CORPORATION C5060WZ
• OLYMPUS IMAGING CORP. E-PL6
• OLYMPUS IMAGING CORP. E-PL7
• OLYMPUS OPTICAL CO.,LTD C5050Z
• Panasonic DMC-FZ18
• Panasonic DMC-FZ30
• Panasonic DMC-FZ70
• Panasonic DMC-FZ8
• Panasonic DMC-GF3
• Panasonic DMC-GH1
• Panasonic DMC-GH4
• Panasonic DMC-L1
• Panasonic DMC-L10
• Panasonic DMC-LX2
• PENTAX Corporation PENTAX *ist D
• PENTAX Corporation PENTAX K100D Super
• PENTAX PENTAX K-5
• RICOH IMAGING COMPANY, LTD. PENTAX K-3
• SAMSUNG EK-GN120
• SAMSUNG NX3000
• SAMSUNG NX5
• SEIKO EPSON CORP. R-D1
• SONY DSC-R1
• SONY DSC-RX100M3
• SONY DSLR-A100
• SONY ILCA-77M2
• SONY ILCE-5000
• SONY ILCE-5100
• SONY ILCE-6000
• SONY ILCE-7S