3.12.0 release notes: mention #6440

Author: michaelklishin

release-notes/3.12.0.md

@@ -182,9 +182,13 @@ in the `3.11.x` release series.
 
 #### Features
 
+ * `rabbitmq-queues rebalance` now supports streams in addition to classic and quorum queues.
+
+   GitHub issue: [#6440](https://github.com/rabbitmq/rabbitmq-server/pull/6440)
+
  * `rabbitmq-streams restart_stream` is a new command that can be used to kick off
-   a new leader election for a stream. This can be used to rebalance stream leaders
-   across cluster nodes.
+   a new leader election for a stream. This is another option that can be used
+   to rebalance stream leaders across cluster nodes.
 
    GitHub issue: [#6440](https://github.com/rabbitmq/rabbitmq-server/pull/6440)