OSDOCS-8614: What's new announcement for pid limits

Author: bhardesty

rosa_release_notes/rosa-release-notes.adoc

@@ -16,6 +16,8 @@ toc::[]
 [id="rosa-q4-2023_{context}"]
 === Q4 2023
 
+* **Configurable process identifier (PID) limits.** With the release of ROSA CLI (`rosa`) version 1.2.31, administrators can use the `rosa create kubeletconfig` and `rosa edit kubeletconfig` commands to set the maximum PIDs for an existing cluster. For more information, see link:https://access.redhat.com/articles/7033551[Changing the maximum number of process IDs per pod (podPidsLimit) for ROSA].
+
 * **ROSA CLI update.** The ROSA CLI (`rosa`) was updated to a new version. For information about what has changed in this release, see the link:https://github.com/openshift/rosa/releases/tag/v1.2.31[ROSA CLI release notes]. For more information about the ROSA CLI (`rosa`), see xref:../cli_reference/rosa_cli/rosa-get-started-cli.adoc#rosa-about_rosa-getting-started-cli[About the ROSA CLI].
 
 * **Configure custom security groups.** With the release of ROSA CLI (`rosa`) version 1.2.31, administrators can use the `rosa create cluster` and `rosa create machinepool` commands to configure a new cluster or a new machine pool with up to 5 additional custom security groups. Additionally, administrators can create a new machine pool with up to 5 additional custom security groups by using OpenShift Cluster Manager. Configuring custom security groups gives administrators greater control over resource access in new clusters and machine pools. For more information, see xref:../rosa_install_access_delete_clusters/rosa_getting_started_iam/rosa-aws-prereqs.adoc#rosa-security-groups_prerequisites[Security groups].