The new Microsoft Teams calendar combines rich productivity features and the latest innovations, like Microsoft Copilot and Microsoft Places, to help users collaborate seamlessly from anywhere. The new calendar is designed to be familiar and reliable, as it’s one unified calendar that works across new Outlook for Windows, Outlook on the web, Places, and Teams. With this update, users will see the "New calendar" toggle at the top right of the calendar app in Teams. New calendar is on by default, and users can toggle it off to return to the classic calendar.