diff --git a/CHANGELOG.md b/CHANGELOG.md
index 364ecdcd15..186ac98d44 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,234 @@
 # Change Log
 
+## [v3.0.0](https://github.com/Polymer/polymer/tree/v3.0.0) (2018-05-08)
+- use released versions of shadycss and webcomponentsjs ([commit](https://github.com/Polymer/polymer/commit/8f79ec40))
+
+- Bump dependencies ([commit](https://github.com/Polymer/polymer/commit/8894e22b))
+
+- Run Chrome & FF serially to try and help flakiness ([commit](https://github.com/Polymer/polymer/commit/95740463))
+
+- Fix lint warning ([commit](https://github.com/Polymer/polymer/commit/ecf36f8a))
+
+- Bump to cli 1.7.0 ([commit](https://github.com/Polymer/polymer/commit/ccb29d27))
+
+- Removing support for returning strings from template getter. (Per previous documented deprecation: https://www.polymer-project.org/2.0/docs/devguide/dom-template#templateobject) ([commit](https://github.com/Polymer/polymer/commit/ba4491d5))
+
+- Fix typos and nits ([commit](https://github.com/Polymer/polymer/commit/c54ff70a))
+
+- Update to Gulp 4 ([commit](https://github.com/Polymer/polymer/commit/4e31768c))
+
+- Add serve command to package.json and update package-lock.json ([commit](https://github.com/Polymer/polymer/commit/eb72d5aa))
+
+- Fix for browsers that don't have input.labels. ([commit](https://github.com/Polymer/polymer/commit/036e4f66))
+
+- Tweak introductory note, fix webpack capitalization ([commit](https://github.com/Polymer/polymer/commit/b823620e))
+
+- gestures: Avoid spreading non-iterable in older browsers ([commit](https://github.com/Polymer/polymer/commit/2ce4f700))
+
+- wip ([commit](https://github.com/Polymer/polymer/commit/f4534c6a))
+
+- Readme: very small tweaks ([commit](https://github.com/Polymer/polymer/commit/d896cdd0))
+
+- Tweak wording. ([commit](https://github.com/Polymer/polymer/commit/fb7630c3))
+
+- Fix link ([commit](https://github.com/Polymer/polymer/commit/fc0ce189))
+
+- Re-order sections ([commit](https://github.com/Polymer/polymer/commit/ee6a67ee))
+
+- Fix LitElement typo ([commit](https://github.com/Polymer/polymer/commit/928c47fc))
+
+- Depend on polymer-cli rather than wct ([commit](https://github.com/Polymer/polymer/commit/503f5631))
+
+- Minor tweaks ([commit](https://github.com/Polymer/polymer/commit/e924ba86))
+
+- Update README for 3.x ([commit](https://github.com/Polymer/polymer/commit/956bba73))
+
+- Update Edge testing versions. ([commit](https://github.com/Polymer/polymer/commit/445c979b))
+
+- Exclude all Edge versions from keyframe/font tests. ([commit](https://github.com/Polymer/polymer/commit/85278860))
+
+- Update wcjs version. ([commit](https://github.com/Polymer/polymer/commit/4805e31f))
+
+- Add .npmignore file (#5215) ([commit](https://github.com/Polymer/polymer/commit/b3c36df7))
+
+- Use node 9 ([commit](https://github.com/Polymer/polymer/commit/0bb5d7c5))
+
+- Use module flags for wct ([commit](https://github.com/Polymer/polymer/commit/8abf2ec9))
+
+- Use babel parser for aslant for dynamic import. ([commit](https://github.com/Polymer/polymer/commit/bddeff4a))
+
+- Fix lint errors. ([commit](https://github.com/Polymer/polymer/commit/dea23515))
+
+- 3.0.0-pre.13 ([commit](https://github.com/Polymer/polymer/commit/da2d66dc))
+
+- [package.json] Remove version script ([commit](https://github.com/Polymer/polymer/commit/e88c1eef))
+
+- Update dependencies ([commit](https://github.com/Polymer/polymer/commit/1ed2b310))
+
+- Fix test typo on Chrome ([commit](https://github.com/Polymer/polymer/commit/a11febe7))
+
+- Fixes IE11 test issues ([commit](https://github.com/Polymer/polymer/commit/8b5803c2))
+
+- Fixes styling tests related to using HTML Imports ([commit](https://github.com/Polymer/polymer/commit/26747422))
+
+- Remove crufty global (fixes globals.html test) ([commit](https://github.com/Polymer/polymer/commit/676f5f3d))
+
+- Update to webcomponents 2.0.0 and webcomponents-bundle.js ([commit](https://github.com/Polymer/polymer/commit/a4d80d09))
+
+- Fix meaningful whitespace in test assertion ([commit](https://github.com/Polymer/polymer/commit/bff03b2d))
+
+- Fix latent mistake using old SD API ([commit](https://github.com/Polymer/polymer/commit/3f24f71d))
+
+- Add global for wct callback when amd compiling ([commit](https://github.com/Polymer/polymer/commit/7f9de46c))
+
+- Eliminate pre-module code from resolveUrl tests ([commit](https://github.com/Polymer/polymer/commit/a93f81f1))
+
+- Improve documentation and legibility. ([commit](https://github.com/Polymer/polymer/commit/ab103dc1))
+
+- Add some global whitelists ([commit](https://github.com/Polymer/polymer/commit/d6821e45))
+
+- Fix references to js files instead of html files ([commit](https://github.com/Polymer/polymer/commit/dfcaadb2))
+
+- Fix glob patterns for eslint ([commit](https://github.com/Polymer/polymer/commit/206cf724))
+
+- Fix ESLint warnings ([commit](https://github.com/Polymer/polymer/commit/6d240138))
+
+- Eliminate more canonical path usage ([commit](https://github.com/Polymer/polymer/commit/1761c79b))
+
+- Eliminate canonical path to wcjs ([commit](https://github.com/Polymer/polymer/commit/4b7cd869))
+
+- Remove extra polymer-legacy.js imports ([commit](https://github.com/Polymer/polymer/commit/f39aaa8c))
+
+- Clean up Polymer fn import ([commit](https://github.com/Polymer/polymer/commit/8069dff4))
+
+- Add WCT config used by all tests ([commit](https://github.com/Polymer/polymer/commit/f1266845))
+
+- Clean up exports ([commit](https://github.com/Polymer/polymer/commit/0b75920f))
+
+- Allow Polymer fn's call to Class to be overridden. ([commit](https://github.com/Polymer/polymer/commit/65d73f17))
+
+- add sill-relevant, deleted tests back in ([commit](https://github.com/Polymer/polymer/commit/180a92ff))
+
+- manually change inter-package dep imports from paths to names ([commit](https://github.com/Polymer/polymer/commit/d913614d))
+
+- manually add assetpath (import.meta.url) for tests that require it ([commit](https://github.com/Polymer/polymer/commit/0c850659))
+
+- move behavior definition to before usage ([commit](https://github.com/Polymer/polymer/commit/09b11fa4))
+
+- define omitted class declaration ([commit](https://github.com/Polymer/polymer/commit/ec36165e))
+
+- remove &lt; and replace with < for innerHTML ([commit](https://github.com/Polymer/polymer/commit/5ce0d24d))
+
+- fixed typo causing test to fail ([commit](https://github.com/Polymer/polymer/commit/0caa7dab))
+
+- fix missing dom-module in modulization ([commit](https://github.com/Polymer/polymer/commit/6c7c770c))
+
+- revert module wait ([commit](https://github.com/Polymer/polymer/commit/12a650b1))
+
+- wait for elements in other modules to be defined ([commit](https://github.com/Polymer/polymer/commit/f0376406))
+
+- no more undefined.hasShadow ([commit](https://github.com/Polymer/polymer/commit/0985652e))
+
+- removed link rel import type css tests ([commit](https://github.com/Polymer/polymer/commit/57d4190c))
+
+- delete debugger ([commit](https://github.com/Polymer/polymer/commit/6905dd10))
+
+- skip link rel import type css tests on native imports ([commit](https://github.com/Polymer/polymer/commit/811ee301))
+
+- add missing css html import ([commit](https://github.com/Polymer/polymer/commit/a52148a3))
+
+- remove importHref tests ([commit](https://github.com/Polymer/polymer/commit/a84ad782))
+
+- Import Polymer function in tests from legacy/polymer-fn.js ([commit](https://github.com/Polymer/polymer/commit/232b0042))
+
+- Export Polymer function from polymer-legacy.js ([commit](https://github.com/Polymer/polymer/commit/69f488b2))
+
+- Add new wct deps. ([commit](https://github.com/Polymer/polymer/commit/a4bedbfd))
+
+- Fixup a few places where comments were misplaced. ([commit](https://github.com/Polymer/polymer/commit/ac2fa81f))
+
+- Fixup license comments. ([commit](https://github.com/Polymer/polymer/commit/f664f251))
+
+- Update package.json from modulizer's output, set polymer-element.js as main. ([commit](https://github.com/Polymer/polymer/commit/5abf4728))
+
+- Replace sources with modulizer output. ([commit](https://github.com/Polymer/polymer/commit/cf3b7215))
+
+- Rename HTML files to .js files to trick git's rename detection. ([commit](https://github.com/Polymer/polymer/commit/527d2cdd))
+
+- Delete typings for now. ([commit](https://github.com/Polymer/polymer/commit/03d85982))
+
+- Add reasoning for suppress missingProperties ([commit](https://github.com/Polymer/polymer/commit/61ca60e4))
+
+- Don't rely on dom-module synchronously until WCR. ([commit](https://github.com/Polymer/polymer/commit/e64bd0ba))
+
+- Avoid closure warnings. ([commit](https://github.com/Polymer/polymer/commit/412bb1e0))
+
+- Add ability to define importMeta on legacy elements. Fixes #5163 ([commit](https://github.com/Polymer/polymer/commit/616f6662))
+
+- Allow legacy element property definitions with only a type. Fixes #5173 ([commit](https://github.com/Polymer/polymer/commit/d321c6c9))
+
+- Update docs. ([commit](https://github.com/Polymer/polymer/commit/c8c9e24d))
+
+- Use Polymer.ResolveUrl.pathFromUrl ([commit](https://github.com/Polymer/polymer/commit/d9d3e439))
+
+- Fix test under shadydom. Slight logic refactor. ([commit](https://github.com/Polymer/polymer/commit/2128ebe2))
+
+- Fix lint warning ([commit](https://github.com/Polymer/polymer/commit/fb741ee3))
+
+- Add importMeta getter to derive importPath from modules. Fixes #5163 ([commit](https://github.com/Polymer/polymer/commit/f7672da9))
+
+- Reference dependencies as siblings in tests. ([commit](https://github.com/Polymer/polymer/commit/2561d868))
+
+- Update types ([commit](https://github.com/Polymer/polymer/commit/23ba7dee))
+
+- Add note about performance vs correctness ([commit](https://github.com/Polymer/polymer/commit/89ab7385))
+
+- Update types. ([commit](https://github.com/Polymer/polymer/commit/5357d64a))
+
+- Lint clean. ([commit](https://github.com/Polymer/polymer/commit/f78b0518))
+
+- Pass through fourth namespace param on attributeChangedCallback. ([commit](https://github.com/Polymer/polymer/commit/91d4aeba))
+
+- Add a @const annotation to help the Closure Compiler understand that Polymer.Debouncer is the name of a type. ([commit](https://github.com/Polymer/polymer/commit/e5a5725d))
+
+- [ci skip] update changelog ([commit](https://github.com/Polymer/polymer/commit/92d282a9))
+
+- Update docs and types ([commit](https://github.com/Polymer/polymer/commit/211c223f))
+
+- Update perf test to use strict-binding-parser ([commit](https://github.com/Polymer/polymer/commit/f53e9e8a))
+
+- Correct import paths ([commit](https://github.com/Polymer/polymer/commit/ab93ab08))
+
+- Only store method once for dynamic functions ([commit](https://github.com/Polymer/polymer/commit/0f0ccdad))
+
+- Move strict-binding-parser to lib/mixins ([commit](https://github.com/Polymer/polymer/commit/a4d4eb9a))
+
+- Rename to StrictBindingParser ([commit](https://github.com/Polymer/polymer/commit/19d4b8cb))
+
+- Fix linter errors ([commit](https://github.com/Polymer/polymer/commit/d8cf449e))
+
+- Extract to a mixin ([commit](https://github.com/Polymer/polymer/commit/57a14236))
+
+- Add missing dependency to bower.json ([commit](https://github.com/Polymer/polymer/commit/333a4664))
+
+- Fix linter warning ([commit](https://github.com/Polymer/polymer/commit/14fac019))
+
+- Add documentation ([commit](https://github.com/Polymer/polymer/commit/df0ee354))
+
+- Add performance test for binding-expressions ([commit](https://github.com/Polymer/polymer/commit/42f7d785))
+
+- Rewrite parser to use switch-case instead of functions ([commit](https://github.com/Polymer/polymer/commit/423074d1))
+
+- Remove escaping from bindings ([commit](https://github.com/Polymer/polymer/commit/8cd49479))
+
+- Fix linter warning ([commit](https://github.com/Polymer/polymer/commit/8a5525b0))
+
+- Refactor to be functional and add more tests ([commit](https://github.com/Polymer/polymer/commit/7eb1a627))
+
+- Fix linter warnings ([commit](https://github.com/Polymer/polymer/commit/79d05b8a))
+
+- Rewrite expression parser to state machine ([commit](https://github.com/Polymer/polymer/commit/13b834df))
+
 ## [v2.6.0](https://github.com/Polymer/polymer/tree/v2.6.0) (2018-03-22)
 - Use function instead of Set ([commit](https://github.com/Polymer/polymer/commit/33d2e1a8))