Merge pull request #232175 from SnehaSudhirG/27Mar-WhatsNew

Added retierment info of Agent based HRW in WhatsNew

Author: prmerger-automator[bot]

articles/automation/whats-new.md

@@ -4,7 +4,7 @@ description: Significant updates to Azure Automation updated each month.
 services: automation
 ms.subservice:
 ms.topic: overview
-ms.date: 01/11/2022
+ms.date: 03/27/2023
 ms.custom: references_regions
 ---
 
@@ -21,6 +21,15 @@ Azure Automation receives improvements on an ongoing basis. To stay up to date w
 
 This page is updated monthly, so revisit it regularly. If you're looking for items older than six months, you can find them in [Archive for What's new in Azure Automation](whats-new-archive.md).
 
+## March 2023
+
+### Retirement of Azure Automation Agent-based User Hybrid Runbook Worker 
+
+**Type:** Plan for change
+
+On **31 August 2024**, Azure Automation will [retire](https://azure.microsoft.com/updates/retirement-azure-automation-agent-user-hybrid-worker/) Agent-based User Hybrid Runbook Worker ([Windows](automation-windows-hrw-install.md) and [Linux](automation-linux-hrw-install.md)). You must migrate all Agent-based User Hybrid Workers to [Extension-based User Hybrid Runbook Worker](extension-based-hybrid-runbook-worker-install.md) (Windows and Linux) before the deprecation date. Moreover, starting **1 October 2023**, creating **new** Agent-based User Hybrid Runbook Worker will not be possible. [Learn more](migrate-existing-agent-based-hybrid-worker-to-extension-based-workers.md).
+
+
 ## January 2023
 
 ### Public Preview of Automation extension for Visual Studio Code