Classic Outlook will gain a Copilot side pane showing AI-generated summaries of search results from documents and Teams messages. Users can interact with and ask follow-up questions in the pane. The feature rolls out mid-December 2025 to mid-February 2026, enabled by default for commercial M365 Copilot license holders.
Applies to: Microsoft 365 apps
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).