MC1192258 – M365 Change Digest

One-line summary

Microsoft 365 Copilot chat will let users RSVP to meetings directly in chat, with options like Accept, Decline, Tentative, Follow, or Remove canceled meetings; feature is on by default.

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Details

Summary

Microsoft 365 Copilot chat will let users RSVP to meetings directly (Accept, Decline, Tentative, Follow, Remove canceled) starting January 2026. This feature is on by default for licensed users, requires no admin setup, and simplifies meeting management within the chat experience.

Body (from Message Center)

Updated December 17, 2025: We have updated the timeline. Thank you for your patience.

[Introduction]

We’re introducing a new capability in Microsoft 365 Copilot chat that allows users to RSVP to meetings directly within the chat experience. This enhancement simplifies meeting management by enabling quick responses such as Accept, Decline, Tentative, Follow, or Remove canceled meetings—all without leaving Copilot chat.

[When this will happen]

General Availability (Worldwide, GCC and DoD): Rollout will begin early January 2026 (previously mid-December 2025) and is expected to complete by end of January 2026 (previously late December 2025).

[How this affects your organization]

Who is affected: Users with a Microsoft 365 Copilot license.
What will happen:
- Users can RSVP to meetings directly from Copilot chat:
- Supported actions include Accept, Decline, Tentative, Follow, and Remove canceled meetings:
- This feature will be ON by default for all tenants.
- No admin configuration is required; existing policies remain unchanged.

[What you can do to prepare]

No action is required from admins.
Communicate this new capability to your helpdesk or end users if needed.

[Compliance considerations]

No compliance considerations identified, review as appropriate for your organization.

Raw JSON (for debugging)

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    "ai_action_required_by": "2026-01-01T00:00:00Z",
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    "ai_model": "gpt-4.1",
    "ai_summary": "Microsoft 365 Copilot chat will let users RSVP to meetings directly in chat, with options like Accept, Decline, Tentative, Follow, or Remove canceled meetings; feature is on by default.",
    "ai_topics": [
      "Copilot"
    ],
    "category": "stayInformed",
    "details_map": {
      "Summary": "Microsoft 365 Copilot chat will let users RSVP to meetings directly (Accept, Decline, Tentative, Follow, Remove canceled) starting January 2026. This feature is on by default for licensed users, requires no admin setup, and simplifies meeting management within the chat experience."
    },
    "id": "MC1192258",
    "importance": 4,
    "is_major_change": false,
    "last_modified": "2025-12-17T17:36:56Z",
    "ms_products": [
      "Copilot"
    ],
    "platforms": null,
    "roadmap_ids": [],
    "services": [
      "Microsoft Copilot (Microsoft 365)"
    ],
    "severity": "normal",
    "tags": [
      "Updated message",
      "New feature",
      "User impact",
      "Admin impact"
    ],
    "title": "(Updated) Microsoft 365 Copilot: RSVP to meetings directly in Copilot chat"
  }
}