RM554934 - Microsoft Copilot (Microsoft 365): Copilot Chat in Outlook expands to reason over inbox, calendar, and enterprise data

Microsoft 365 Roadmap

Summary

Copilot Chat in Outlook expanding to support reasoning over a user's entire inbox, calendar and other enterprise data for Microsoft 365 Copilot Chat users (without a Microsoft 365 Copilot license) .

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Roadmap ID

554934

View in M365 Roadmap

Last Updated

Oct 29, 2026

Published Feb 5, 2026

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Status

Rolling out

Release

General Availability

Platforms

Android

Desktop

iOS

Mac

Web

Service

Outlook

Microsoft Copilot (Microsoft 365)

Tag

Rolling out

General Availability

GCC

GCC High

DoD

Cloud

DoD

GCC

GCC High

Description

Copilot Chat in Outlook expanding to support reasoning over a user's entire inbox, calendar and other enterprise data for Microsoft 365 Copilot Chat users (without a Microsoft 365 Copilot license) .

GA date: October CY2026

Discussion

All Message Center discussions

Version history

5 versions tracked

Updated 4 times since Mar 26, 2026. Microsoft only ever shows the current version; this archive preserves the history.

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Oct 29, 2026 · 11:01 PMLatest · v5
Changed: Body, Tags, Status
Oct 27, 2026 · 11:05 PMv4
Changed: Body
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Sep 24, 2026 · 10:58 PMv3
Changed: Body
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Aug 7, 2026 · 09:45 PMv2
Changed: Body
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Mar 26, 2026 · 11:15 PMOriginal · v1
Changed: Initial version
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