Microsoft 365 Copilot's Agent Mode in Excel Labs (Frontier preview) enables natural language workbook editing, available from October 21, 2025, for Frontier program customers. Admins must enable Frontier access; users can toggle features in Copilot. More features and languages are coming, with no identified compliance issues.
Applies to: Microsoft 365 for the web
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).