MC666615 - (Upated) Office documents have a new default theme

Updated March 15, 2024: We have updated the rollout timeline below. Thank you for your patience.

A new default document theme is coming to Word, Excel, PowerPoint, and Outlook across your endpoints. The new theme will include the new default font, Aptos, a new color palette, and updated default line weights.

This change is associated with Microsoft 365 Roadmap ID: 161740

When this will happen:

Preview: This feature is now available.

Worldwide: We will begin rolling out mid-December 2023 (previously mid-August) and be fully rolled out by late March 2024 (previously early March).

How this will affect your organization:

The default Office theme will be changing across Word, Excel, PowerPoint, and Outlook on Windows, Mac, iOS, Android, and Web.

What you need to do to prepare:

There is no action needed to prepare for this change.