Starting end of May 2026, users will automatically see their automapped calendars when switching between classic and new Outlook for Windows. This feature is enabled by default, requires no admin action, and rollout will complete by end of June 2026. Users should be notified and documentation updated accordingly.
Applies to: Microsoft 365 for the web · Microsoft 365 apps
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).