Learn Editor: Update whats-new.md

Author: diannegali

defender-xdr/whats-new.md

@@ -26,7 +26,9 @@ For more information on what's new with other Microsoft Defender security produc
 - [What's new in Microsoft Defender for Endpoint](/defender-endpoint/whats-new-in-microsoft-defender-endpoint)
 - [What's new in Microsoft Defender for Identity](/defender-for-identity/whats-new)
 - [What's new in Microsoft Defender for Cloud Apps](/cloud-app-security/release-notes)
+- [What's new in Microsoft Defender for Cloud](/azure/defender-for-cloud/release-notes)
 - [What's new in Microsoft Sentinel](/azure/sentinel/whats-new)
+- [What's new in Microsoft Purview](/purview/whats-new)
 
 You can also get product updates and important notifications through the [message center](https://admin.microsoft.com/Adminportal/Home#/MessageCenter).