Starting September 15, 2025, the Microsoft 365 Copilot iPhone app will offer file previews and Copilot Chat for Word, Excel, and PowerPoint files but will no longer support editing; users must open standalone apps for editing. Similar updates will follow for iPad. No admin action is required, but user communication is recommended.
Applies to: Microsoft 365 suite · Microsoft 365 apps
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).