more updates

Author: AbhishekMallick01

articles/backup/whats-new.md

@@ -2,7 +2,7 @@
 title: What's new in Azure Backup
 description: Learn about new features in Azure Backup.
 ms.topic: conceptual
-ms.date: 10/14/2022
+ms.date: 03/01/2023
 ms.service: backup
 author: jyothisuri
 ms.author: jsuri
@@ -16,6 +16,8 @@ You can learn more about the new releases by bookmarking this page or by [subscr
 
 ## Updates summary
 
+- March 2023
+  - [Microsoft Azure Backup Server v4 is now generally available](#microsoft-azure-backup-server-v4-is-now-generally-available)
 - October 2022
   - [Multi-user authorization using Resource Guard for Backup vault (in preview)](#multi-user-authorization-using-resource-guard-for-backup-vault-in-preview)
   - [Enhanced soft delete for Azure Backup (preview)](#enhanced-soft-delete-for-azure-backup-preview)
@@ -50,6 +52,15 @@ You can learn more about the new releases by bookmarking this page or by [subscr
 - February 2021
   - [Backup for Azure Blobs (in preview)](#backup-for-azure-blobs-in-preview)
 
+## Microsoft Azure Backup Server v4 is now generally available
+
+Azure Backup now provides Microsoft Azure Backup Server (MABS) v4, the latest edition of on-premises backup solution.
+
+- It can *protect* and *run on* Windows Server 2022, Azure Stack HCI 22H2, vSphere 8.0, and SQL Server 2022.
+- It contains stability improvements and bug fixes on *MABS v3 UR2*. 
+
+For more information see [What's new in MABS](backup-mabs-whats-new-mabs.md).
+
 ## Multi-user authorization using Resource Guard for Backup vault (in preview)
 
 Azure Backup now supports multi-user authorization (MUA) that allows you to add an additional layer of protection to critical operations on your Backup vaults. For MUA, Azure Backup uses the Azure resource, Resource Guard, to ensure critical operations are performed only with applicable authorization.
@@ -194,7 +205,7 @@ For more information, see [Overview of operational backup for Azure Blobs](blob-
 
 ## Enhancements to encryption using customer-managed keys for Azure Backup (in preview)
 
-Azure Backup now provides enhanced capabilities (in preview) to manage encryption with customer-managed keys. Azure Backup allows you to bring in your own keys to encrypt the backup data in the Recovery Services vaults, thus providing you a better control.
+Azure Backup now provides enhanced capabilities (in preview) to manage encryption with customer-managed keys. Azure Backup allows you to bring in your own keys to encrypt the backup data in the Recovery Services vaults, thus providing you with better control.
 
 - Supports user-assigned managed identities to grant permissions to the keys to manage data encryption in the Recovery Services vault.
 - Enables encryption with customer-managed keys while creating a Recovery Services vault.