Rewrite changelog after 2.11 maintenance release

CHANGELOG.rst

@@ -9,25 +9,43 @@ and this project adheres to `Semantic Versioning`_.
 Unreleased
 ----------
 
-Breaking changes
-~~~~~~~~~~~~~~~~
+Added
+~~~~~
+
+* Notification drawer in top nav bar
+* GraphQL queries and mutations for core data management
+
+Changed
+~~~~~~~
+
+* Rewrite of frontend using Vuetify
 
-* The frontend is being rewritten as a Vue.js application compeltely separated from
-  the backend. This requires changes to deployments. The admin docs have been updated
-  accordingly. Administrators need to make sure to read the updated guide before
-  upgrading AlekSIS-Core to this version!
+Removed
+~~~~~~~
+
+* Support for materialize-based frontend views (deprecated in 2.11)
+
+`2.11`_ - 2022-08-27
+--------------------
+
+This release sunsets the 2.x series of the AleKSIS core.
 
 Deprecated
 ~~~~~~~~~~
 
 * All frontends using Django views and Django templates are deprecated and support
-  for them will be removed in AlekSIS-Core 4.0. All frontend code must be written in
+  for them will be removed in AlekSIS-Core 3.0. All frontend code must be written in
   Vue.js and be properly separated from the backend. In the same spirit, all backend
-  features must expose GraphQL APIs for the frontendd to use
+  features must expose GraphQL APIs for the frontend to use.
 
 Added
 ~~~~~
 
+The following features are introduced here mainly to simplify gradual
+updates. GraphQL and the Vuetify/Vue.js frontend mechanisms are preview
+functionality and app developers should not rely on them before AlekSIS-Core
+3.0.
+
 * Introduce GraphQL API and Vue.js frontend implementation
 * Introduce webpack bundling for frontend code
 
@@ -916,3 +934,4 @@ Fixed
 .. _2.10: https://edugit.org/AlekSIS/Official/AlekSIS/-/tags/2.10
 .. _2.10.1: https://edugit.org/AlekSIS/Official/AlekSIS/-/tags/2.10.1
 .. _2.10.2: https://edugit.org/AlekSIS/Official/AlekSIS/-/tags/2.10.2
+.. _2.11: https://edugit.org/AlekSIS/Official/AlekSIS/-/tags/2.11