diff --git a/CHANGELOG.md b/CHANGELOG.md
index d64f9309af..31403656f5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,61 @@
+<a name="9.0.0-next.12"></a>
+# [9.0.0-next.12](https://github.com/angular/angular/compare/9.0.0-next.11...9.0.0-next.12) (2019-10-18)
+
+
+### Bug Fixes
+
+* **bazel:** Remove angular devkit and restore ngc postinstall ([#32946](https://github.com/angular/angular/issues/32946)) ([f036684](https://github.com/angular/angular/commit/f036684))
+* **common:** remove deprecated support for intl API ([#29250](https://github.com/angular/angular/issues/29250)) ([9e7668f](https://github.com/angular/angular/commit/9e7668f)), closes [#18284](https://github.com/angular/angular/issues/18284)
+* **compiler:** absolute source span for template attribute expressions ([#33189](https://github.com/angular/angular/issues/33189)) ([fd4fed1](https://github.com/angular/angular/commit/fd4fed1))
+* **core:** add CLI instructions when localize polyfill is missing ([#33199](https://github.com/angular/angular/issues/33199)) ([5dfbcd5](https://github.com/angular/angular/commit/5dfbcd5))
+* **ivy:** ensure errors are thrown during checkNoChanges for style/class bindings ([#33103](https://github.com/angular/angular/issues/33103)) ([f45c431](https://github.com/angular/angular/commit/f45c431))
+* **ivy:** ensure map-based interpolation works with other map-based sources ([#33236](https://github.com/angular/angular/issues/33236)) ([7b64680](https://github.com/angular/angular/commit/7b64680))
+* **ivy:** handling className as an input properly ([#33188](https://github.com/angular/angular/issues/33188)) ([6f203c9](https://github.com/angular/angular/commit/6f203c9))
+* **ivy:** ignore non-property bindings to inputs in template type checker ([#33130](https://github.com/angular/angular/issues/33130)) ([08cb2fa](https://github.com/angular/angular/commit/08cb2fa)), closes [#32099](https://github.com/angular/angular/issues/32099) [#32496](https://github.com/angular/angular/issues/32496)
+* **ivy:** throw better error for missing generic type in ModuleWithProviders ([#33187](https://github.com/angular/angular/issues/33187)) ([0e08ad6](https://github.com/angular/angular/commit/0e08ad6))
+* **ivy:** use container i18n meta if a message is a single ICU ([#33191](https://github.com/angular/angular/issues/33191)) ([7e64bbe](https://github.com/angular/angular/commit/7e64bbe)), closes [#33171](https://github.com/angular/angular/issues/33171)
+* **ivy:** use ReflectionHost to check exports when writing an import ([#33192](https://github.com/angular/angular/issues/33192)) ([de44570](https://github.com/angular/angular/commit/de44570))
+* **language-service:** Increase project/script version in MockHost.reset() ([#33200](https://github.com/angular/angular/issues/33200)) ([43241a5](https://github.com/angular/angular/commit/43241a5))
+* **language-service:** reset MockHost after every spec instead of creating new LS ([#33200](https://github.com/angular/angular/issues/33200)) ([11bf767](https://github.com/angular/angular/commit/11bf767))
+* **ngcc:** avoid warning when reflecting on index signature member ([#33198](https://github.com/angular/angular/issues/33198)) ([78214e7](https://github.com/angular/angular/commit/78214e7)), closes [/github.com/angular/angular/blob/4659cc26e/packages/common/http/src/jsonp.ts#L39](https://github.com//github.com/angular/angular/blob/4659cc26e/packages/common/http/src/jsonp.ts/issues/L39)
+* **ngcc:** better detection of end of decorator expression ([#33192](https://github.com/angular/angular/issues/33192)) ([5071083](https://github.com/angular/angular/commit/5071083))
+* **ngcc:** Esm5ReflectionHost.getDeclarationOfIdentifier should handle aliased inner declarations ([#33252](https://github.com/angular/angular/issues/33252)) ([bfd07b3](https://github.com/angular/angular/commit/bfd07b3))
+* **ngcc:** report the correct viaModule when reflecting over commonjs ([#33192](https://github.com/angular/angular/issues/33192)) ([afcff73](https://github.com/angular/angular/commit/afcff73))
+* **router:** adjust UrlTree redirect to replace URL if in eager update ([#32988](https://github.com/angular/angular/issues/32988)) ([f6667f8](https://github.com/angular/angular/commit/f6667f8)), closes [#31168](https://github.com/angular/angular/issues/31168) [#27148](https://github.com/angular/angular/issues/27148)
+* **upgrade:** remove unused version export ([#33180](https://github.com/angular/angular/issues/33180)) ([becd62d](https://github.com/angular/angular/commit/becd62d))
+
+
+### Features
+
+* add a flag in bootstrap to enable coalesce event change detection to improve performance ([#30533](https://github.com/angular/angular/issues/30533)) ([21c1e14](https://github.com/angular/angular/commit/21c1e14))
+* **ivy:** improve debugging experience for styles/classes ([#33179](https://github.com/angular/angular/issues/33179)) ([724707c](https://github.com/angular/angular/commit/724707c))
+* typescript 3.6 support ([#32946](https://github.com/angular/angular/issues/32946)) ([86e1e6c](https://github.com/angular/angular/commit/86e1e6c)), closes [#32380](https://github.com/angular/angular/issues/32380)
+* **ivy:** type checking of event bindings ([#33125](https://github.com/angular/angular/issues/33125)) ([6958d11](https://github.com/angular/angular/commit/6958d11))
+* **language-service:** add Angular pseudo elements into completions ([#31248](https://github.com/angular/angular/issues/31248)) ([7c64b8d](https://github.com/angular/angular/commit/7c64b8d))
+* **ngcc:** support --async flag (defaults to true) ([#33192](https://github.com/angular/angular/issues/33192)) ([2196114](https://github.com/angular/angular/commit/2196114))
+* **ngcc:** support ignoreMissingDependencies in ngcc config ([#33192](https://github.com/angular/angular/issues/33192)) ([4da2dda](https://github.com/angular/angular/commit/4da2dda))
+
+
+### Performance Improvements
+
+* **ivy:** initialise inputs from static attrs on the first template pass only ([#33195](https://github.com/angular/angular/issues/33195)) ([aef7dca](https://github.com/angular/angular/commit/aef7dca))
+* **ivy:** limit global state read / write in host bindings ([#33195](https://github.com/angular/angular/issues/33195)) ([3e14c2d](https://github.com/angular/angular/commit/3e14c2d))
+
+
+### Reverts
+
+* build: remove vendored Babel typings ([#33176](https://github.com/angular/angular/issues/33176)) ([#33215](https://github.com/angular/angular/issues/33215)) ([e9ee685](https://github.com/angular/angular/commit/e9ee685))
+* build: update webdriver-manager to support latest Chrome ([#33216](https://github.com/angular/angular/issues/33216)) ([a914859](https://github.com/angular/angular/commit/a914859))
+* build: use http caching on windows CI runs ([#33238](https://github.com/angular/angular/issues/33238)) ([#33254](https://github.com/angular/angular/issues/33254)) ([117ca7c](https://github.com/angular/angular/commit/117ca7c))
+* feat: add a flag in bootstrap to enable coalesce event change detection to improve performance ([#30533](https://github.com/angular/angular/issues/30533)) ([#33230](https://github.com/angular/angular/issues/33230)) ([082aed6](https://github.com/angular/angular/commit/082aed6))
+
+
+### BREAKING CHANGES
+
+* typescript 3.4 and 3.5 are no longer supported, please update to typescript 3.6
+
+
+
 <a name="9.0.0-next.11"></a>
 # [9.0.0-next.11](https://github.com/angular/angular/compare/9.0.0-next.10...9.0.0-next.11) (2019-10-15)
 
diff --git a/package.json b/package.json
index 5b3c8b7281..85ff0046ff 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "angular-srcs",
-  "version": "9.0.0-next.11",
+  "version": "9.0.0-next.12",
   "private": true,
   "description": "Angular - a web framework for modern web apps",
   "homepage": "https://github.com/angular/angular",