Add August 2025 updates for SecOps dispute process

Dispute submission

Author: MishraSoumyaMS

defender-office-365/defender-for-office-365-whats-new.md

@@ -39,6 +39,10 @@ For more information on what's new with other Microsoft Defender security produc
 - [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)
 
+## Aug 2025
+
+- SecOps can now dispute Microsoft’s verdict on previously submitted emails or URLs when they believe the result is incorrect. Disputing an item links back to the original submission and triggers a reevaluation with full context and audit history. [Learn more](submissions-admin.md).
+
 ## July 2025
 
 - Users can report external and intra-org [Microsoft Teams messages](submissions-teams.md) from chats, standard and private channels, meeting conversations to Microsoft, the specified reporting mailbox, or both via [user reported settings](submissions-user-reported-messages-custom-mailbox.md).