Add v6.8.0 to CHANGELOG for ember-source

Author: kategengler

CHANGELOG.md

@@ -1,24 +1,12 @@
 # Ember Changelog
 
-## v6.8.0-beta.4 (September 29, 2025)
-
-- [#20988](https://github.com/emberjs/ember.js/pull/20988) [BUGFIX] Drop unnecessary package ember-cli-htmlbars-inline-precompile from component-test blueprint
-
-## v6.8.0-beta.3 (September 15, 2025)
-
-- [#20974](https://github.com/emberjs/ember.js/pull/20974) [BUGFIX] Fix issue with renderer's cleanup since the introduction of renderComponent
-
-## v6.8.0-beta.2 (September 8, 2025)
-
-- [#20966](https://github.com/emberjs/ember.js/pull/20966) [BUGFIX] Correctly export `renderComponent` from `@ember/renderer`
-
-## v6.8.0-beta.1 (September 1, 2025)
-
+## v6.8.0 (October 13, 2025)
+ 
 - [#20950](https://github.com/emberjs/ember.js/pull/20950) / [#20961](https://github.com/emberjs/ember.js/pull/20961) / [#20963](https://github.com/emberjs/ember.js/pull/20963) [FEATURE] Upgrade glimmer-vm to build in Tracked Collections (previously provided by `tracked-built-ins`) per [RFC #1068](https://rfcs.emberjs.com/id/1068-tracked-collections).
   - [WARNING] Drops support for TS 5.0 and TS 5.1 under our [TS Support policy](https://emberjs.com/typescript-support/)
-- [#20962](https://github.com/emberjs/ember.js/pull/20962) [FEATURE] Add `renderComponent` per [RFC #1099](https://rfcs.emberjs.com/id/1099-renderComponent).
+- [#20962](https://github.com/emberjs/ember.js/pull/20962) / [#20966](https://github.com/emberjs/ember.js/pull/20966) / [#20974](https://github.com/emberjs/ember.js/pull/20974) [FEATURE] Add `renderComponent` per [RFC #1099](https://rfcs.emberjs.com/id/1099-renderComponent).
 - [#20957](https://github.com/emberjs/ember.js/pull/20957) / [#20960](https://github.com/emberjs/ember.js/pull/20960) Add TS 5.8, 5.9 to the TS test matrix
-- [#20949](https://github.com/emberjs/ember.js/pull/20949) [INTERNAL] Add a workflow to generate api docs and open PRs to the api docs data repo
+- [#20988](https://github.com/emberjs/ember.js/pull/20988) [BUGFIX] Drop unnecessary package ember-cli-htmlbars-inline-precompile from component-test blueprint
 
 ## v6.7.0 (September  1, 2025)