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v1.0Publisher announcementCalendars · October 2026

Calendars: 2 API change passages

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What Microsoft published

Month-dated announcement

Promoted the isSharedWithMe property of calendar resource from beta to v1.0. The property is used to identify the shared calendars. Added the delta method to the calendar resource type. Use it to track calendars added, deleted, or updated in a user's mailbox.

2 individual passage citations
2 API documentation links

Same source page; the statements may concern different changes

Observed announcement history and complete recorded revisions

What changed

First observed 21 Oct 2026

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