docs: version check release notes

docs/changelogs/v0.30.md

@@ -6,13 +6,22 @@
 
 - [Overview](#overview)
 - [🔦 Highlights](#-highlights)
+  - [Automated `ipfs version check`](#automated-ipfs-version-check)
 - [📝 Changelog](#-changelog)
 - [👨‍👩‍👧‍👦 Contributors](#-contributors)
 
 ### Overview
 
 ### 🔦 Highlights
 
+#### Automated `ipfs version check`
+
+Kubo now performs privacy-preserving version checks using the [libp2p identify protocol](https://github.com/libp2p/specs/blob/master/identify/README.md) on peers detected by the Amino DHT client.
+If more than 5% of Kubo peers seen by your node are running a newer version, you will receive a log message notification.
+
+To disable automated checks, set `KUBO_VERSION_CHECK=false` in your environment.
+For manual checks, refer to `ipfs version check --help` for details.
+
 ### 📝 Changelog
 
 ### 👨‍👩‍👧‍👦 Contributors