Update files-whats-new.md

Author: khdownie

articles/storage/files/files-whats-new.md

@@ -4,18 +4,38 @@ description: Learn about new features and enhancements in Azure Files and Azure
 author: khdownie
 ms.service: azure-file-storage
 ms.topic: conceptual
-ms.date: 11/08/2024
+ms.date: 02/25/2025
 ms.author: kendownie
 ---
 
 # What's new in Azure Files and Azure File Sync
 
 Azure Files and Azure File Sync are updated regularly to offer new features and enhancements. This article provides detailed information about what's new in Azure Files and Azure File Sync.
 
+## What's new in 2025
+
+### 2025 quarter 1 (January, February, March)
+
+#### REST API support for NFS Azure file shares is now in public preview
+
+Data plane REST API access to NFS Azure file shares will enable further development of multiple value-added services for NFS shares, such as AzCopy and Azure Backup. This enhancement also allows third-party ISV partners to implement efficient migration, backup, and disaster recovery scenarios. Additionally, the REST API support includes OAuth, providing end-to-end security and enabling access without storage account keys.
+
 ## What's new in 2024
 
 ### 2024 quarter 4 (October, November, December)
 
+#### Azure File Sync support for system-assigned managed identities is now in public preview
+
+Managed Identities eliminates the need for shared keys (storage account key, SAS keys) to authenticate to Azure Files by utilizing a system-assigned managed identity provided by Microsoft Entra ID. 
+
+When managed identities are configured for an Azure File Sync deployment, system-assigned managed identities are used for the following scenarios: 
+
+-	Storage Sync Service authentication to Azure file share
+-	Registered server authentication to Azure file share 
+-	Registered server authentication to Storage Sync Service
+
+Public preview is available in all Azure Public and Gov regions supported by Azure File Sync. There's no additional cost to configure Azure File Sync to use managed identities. To learn more, see [How to use managed identities with Azure File Sync (preview)](file-sync-managed-identities.md).
+
 #### Azure File Sync v19 release
 
 The Azure File Sync v19 release improves performance, security, and adds support for Windows Server 2025: