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MC1041465 Stay informedUpdated messageFeature updateUser impact

New Microsoft Outlook for Windows and Outlook on the web: Optimized hover actions in the message list

From Microsoft 365 Message Center Archive by Merill Fernando · Microsoft may not have sent this notice to your tenant.
Exchange OnlineMicrosoft 365 for the webMicrosoft 365 apps
Microsoft 365 admin center

Rollout

Roadmap
429868

Rollout dates are often only in the text. When Microsoft moves them, the change shows under "What changed".

Schedule dates changed in the text

Date phrases in schedule sentences differ between the versions this installation saw
  • Seen 16 Oct 2025 late September 2025 → mid-July 2025, early November 2025
  • Seen 1 Jul 2025 late June 2025, late July 2025, early August 2025 → mid-August 2025, mid-September 2025, late September 2025
  • Seen 24 Jun 2025 early June 2025, early July 2025 → late June 2025, early August 2025
  • Seen 20 May 2025 mid-May 2025, late May 2025, late June 2025 → early June 2025, early July 2025, late July 2025
  • Seen 28 Apr 2025 early April 2025, late April 2025 → mid-May 2025, late June 2025

Read from date phrases in Microsoft's text, not from notice metadata. A changed phrase can be a moved rollout, a new milestone or just rewording; "What changed" below shows which.

What the notice says

Microsoft’s text, safely structured

Updated October 16, 2025: We have updated the timeline below. Thank you for your patience.

In new Outlook for Windows and Outlook on the web, the hover actions in the message list will be moved to the Sender/From column to be more space-efficient and minimize unnecessary mouse travel for users with their Reading Pane set to Hide or Bottom. The large width occupied by the DateTime Received column will thus be reduced. For all users, a one-time shortcut to change/set your hover actions will be provided. After the changes to the hover actions, the first action will be replaced by a quick button (gear button) to change/set your hover actions. After that button has been triggered once, it will disappear, and your hover action settings will kick in fully.

This message is associated with Microsoft 365 Roadmap ID 429868.

When this will happen

Targeted Release: We will begin rolling out mid-July 2025 (previously late June) and expect to complete by mid-August 2025 (previously late July).

General Availability (Worldwide, GCC, GCC High, DoD): We will begin rolling out mid-September 2025 (previously late July) and expect to complete by early November 2025 (previously late September).

How this will affect your organization

For new Outlook for Windows and Outlook on the web, hover actions in the message list will be moved to the Sender/From column to reduce the large width occupied by the DateTime Received column.

What you need to do to prepare

This rollout will happen automatically with no admin action required. You may want to notify your users about this change and update any relevant documentation as appropriate.

#newoutlookforwindows

What changed

Between archive captures, newest first

  1. Updated July 1,October 16, 2025: We have updated the timeline below. Thank you for your patience. … 429868. When this will happen: Targeted Release: We will begin rolling out mid-July2 025mid-July 2025 (previously late June) and expect to complete by mid-August 2025 (previously late … rolling out mid-September 2025 (previously late July) and expect to complete by late Septemberearly November 2025 (previously early August).late September). How this will affect your organization: For new Outlook for Windows and …

  2. Updated June 24,July 1, 2025: We have updated the timeline below. Thank you for your patience. … 429868. When this will happen: Targeted Release: We will begin rolling out late June 2025 mid-July2 025 (previously earlylate June) and expect to complete by late July mid-August 2025 (previously earlylate July). General Availability (Worldwide, GCC, GCC High, DoD): We will begin rolling out late July mid-September 2025 (previously earlylate July) and expect to complete by early Augustlate September 2025 (previously late July).early August). How this will affect your organization: For new Outlook for Windows and …

  3. Updated May 20,June 24, 2025: We have updated the timeline below. Thank you for your patience. … 429868. When this will happen: Targeted Release: We will begin rolling out earlylate June 2025 (previously mid-May)early June) and expect to complete by earlylate July 2025 (previously late May).early July). General Availability (Worldwide, GCC, GCC High, DoD): We will begin rolling out earlylate July 2025 (previously late May)early July) and expect to complete by late Julyearly August 2025 (previously late June).July). How this will affect your organization: For new Outlook for Windows and …

  4. Only details this page does not show changed.

  5. Updated April 28,May 20, 2025: We have updated the timeline below. Thank you for your patience. … 429868. When this will happen: Targeted Release: We will begin rolling out mid-Mayearly June 2025 (previously early April) mid-May) and expect to complete by late Mayearly July 2025 (previously late April).May). General Availability (Worldwide, GCC, GCC High, DoD): We will begin rolling out late Mayearly July 2025 (previously late April)May) and expect to complete by late JuneJuly 2025 (previously late May).June). How this will affect your organization: For new Outlook for Windows and …

    • Tags Feature update, User impact → Updated message, Feature update, User impact

    Updated April 28, 2025: We have updated the timeline below. Thank you for your patience. In new Outlook for Windows and Outlook on the web, the hover … 429868. When this will happen: Targeted Release: We will begin rolling out mid-May 2025 (previously early April 2025 April) and expect to complete by late April 2025.May 2025 (previously late April). General Availability (Worldwide, GCC, GCC High, DoD): We will begin rolling out late AprilMay 2025 (previously late April) and expect to complete by late May 2025.June 2025 (previously late May). How this will affect your organization: For new Outlook for Windows and …

  7. · first version seen

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