Link to new Stream Filtering docs

Author: ansd

release-notes/4.2.0.md

@@ -51,6 +51,8 @@ UTC() < properties.absolute-expiry-time AND
 NOT cancelled
 ```
 
+To learn more visit out new documentation guide on [Stream Filtering](https://www.rabbitmq.com/docs/next/stream-filtering).
+
 Pull Request: [#14184](https://github.com/rabbitmq/rabbitmq-server/pull/14184)
 
 ### Incoming and Outgoing Message Interceptors for native protocols