Merge pull request #76093 from mletalie/OSDOCS-10571

[OSDOCS-10571]: What's New: Upgrading machine pools in ROSA

Author: EricPonvelle

rosa_release_notes/rosa-release-notes.adoc

@@ -35,13 +35,15 @@ For more information on region availabilities, see xref:../rosa_architecture/ros
 
 * **Node management improvements.** Now, you can perform specific tasks to make clusters more efficient. You can cordon, uncordon, and drain a specific node. For more information, see xref:../nodes/nodes/nodes-nodes-working.adoc[Working with nodes].
 
-* **Node drain grace periods.** You can now configure node drain grace periods in {hcp-title-first} clusters with the `rosa` CLI. 
+* **Node drain grace periods.** You can now configure node drain grace periods in {hcp-title-first} clusters with the `rosa` CLI.
 +
 For more information about configuring node drain grace periods, see xref:../rosa_cluster_admin/rosa_nodes/rosa-managing-worker-nodes.adoc#rosa-node-drain-grace-period_rosa-managing-worker-nodes[Configuring node drain grace periods in {hcp-title-first}].
 
 [id="rosa-q1-2024_{context}"]
 === Q1 2024
 
+* **Machine pool update.** You can now upgrade machine pools that are configured on ROSA with HCP clusters. For more information, see xref:../cli_reference/rosa_cli/rosa-manage-objects-cli.adoc#rosa-upgrade-machinepool_rosa-managing-objects-cli[upgrade machinepool].
+
 * **{hcp-title} regional availability update.** {hcp-title-first} is now available in the following regions:
 +
 ** Hyderabad (`ap-south-2`)