docs: add version support notes for Mongoose 8, including EOL date for Mongoose 6

Author: vkarpov15

docs/version-support.md

@@ -1,6 +1,11 @@
 # Version Support
 
-Mongoose 7.x (released February 27, 2023) is the current Mongoose major version.
+Mongoose 8.x (released October 31, 2023) is the current Mongoose major version.
+We ship all new bug fixes and features to 8.x.
+
+## Mongoose 7
+
+Mongoose 7.x (released February 27, 2023) is currently in legacy support.
 We ship all new bug fixes and features to 7.x.
 
 ## Mongoose 6
@@ -14,14 +19,15 @@ We are **not** actively backporting any new features from Mongoose 7 into Mongoo
 Until August 24, 2023, we will backport requested features into Mongoose 6; please open a [feature request on GitHub](https://github.com/Automattic/mongoose/issues/new?assignees=&labels=enhancement%2Cnew+feature&template=feature.yml) to request backporting a feature into Mongoose 6.
 After August 24, 2023, we will not backport any new features into Mongoose 6.
 
-We do not currently have a formal end of life (EOL) date for Mongoose 6.
-However, we will not end support for Mongoose 6 until at least January 1, 2024.
+Mongoose 6.x end of life (EOL) is January 1, 2025.
+Mongoose 6.x will no longer receive any updates, security or otherwise, after that date.
 
 ## Mongoose 5
 
 Mongoose 5.x (released January 17, 2018) is currently only receiving security fixes and requested bug fixes.
 Please open a [bug report on GitHub](https://github.com/Automattic/mongoose/issues/new?assignees=&labels=&template=bug.yml) to request backporting a fix to Mongoose 5.
 We will **not** backport any new features from Mongoose 6 or Mongoose 7 into Mongoose 5.
+This includes support for newer versions of MongoDB: we do not intend to add support for MongoDB 5 or higher to Mongoose 5.x.
 
 Mongoose 5.x end of life (EOL) is March 1, 2024.
 Mongoose 5.x will no longer receive any updates, security or otherwise, after that date.