Microsoft 365 Insights: September 2025

What’s New in Microsoft 365: September 2025

The summary of key updates and enhancements in Microsoft 365 in September 2025

Copilot

Fix spelling and grammar faster with Microsoft 365 Copilot in Word for the web

Now you can apply all grammar and spelling corrections simultaneously in Word for the web! Read more.

Availability: This feature is currently rolling out to Word for the web users. 

Copilot

Copilot-powered file previews coming to Microsoft 365 Copilot app for iOS

Microsoft is making changes to the Microsoft 365 Copilot app for iOS that put key AI-driven capabilities and experiences front and center. Read more.

Availability: This update is being gradually rolled out to Microsoft 365 Copilot app users on iOS.

Excel

Faster formula writing with formula completion in Excel for Windows

Formula completion autocompletes formulas when you type = by referencing the context of your workbook. Read more.

Availability:  Formula completion is available to Excel for Windows users with a Microsoft 365 Copilot license (get more details on licenses for businesses) and running Version 2510 (Build 19311.20000).

Excel

Microsoft Excel turns 40!

In honor of its 40th birthday, here’s a look at how we got here, and where we’re headed next! Read more.

Microsoft 365

Improving accessibility: Standard red gets an update in Microsoft 365

By slightly darkening the standard red, we’ve made red text easier to read for more people. Read more.

Availability: This change is available for Word, PowerPoint, Outlook, or OneNote users running:

• Windows: Version 2411 (Build 18324.20012) or later.
• Mac: Version 16.92 (Build 24120731) or later.
   

OneNote

Show or hide the Copilot icon in OneNote on Windows

Customize your OneNote pages on Windows by deciding whether the Copilot icon appears. Read more.

Availability: The Copilot icon toggle is available to OneNote on Windows users with a Copilot license (get more details on licenses for consumers and for businesses) and running Version 2509 (Build 19207.10000) or later.

Outlook

Experience the future: Switch to new Outlook for Windows today!

New Outlook for Windows features top-requested capabilities, including pinning important emails, adding shared mailboxes as accounts, and managing newsletters. Read more.

Availability:  The updated Outlook for Windows is available to all Windows 10 and higher users.

Teams

Listen to an audio recap of your meetings in Teams

This podcast-style recap will summarize key topics and takeaways from a single or multiple meetings in minutes. Read more.

Availability: To use this new feature, you must be a member of the Teams Public Preview or Microsoft 365 Targeted release and use the new Teams client on Windows, Mac, Android, iOS, or the web.

Teams

Introducing Channel Agent in Teams

Channel Agent in Teams can generate Loop reports, answer questions, and schedule meetings based on channel activity. Read more.

Availability: To use this new feature, you must be a member of the Teams Public Preview on Windows, Mac, Android, iOS, or the web.

SharePoint

SharePoint Showcase highlights: Get the most out of SharePoint agents

SharePoint agents are useful for tasks like answering sales questions or onboarding new hires. Read more.

Availability: Anyone with a Microsoft 365 Copilot license or SharePoint license (learn more about consumption-based pricing for SharePoint agents) can set up an agent.

Source: https://techcommunity.microsoft.com/category/microsoft365/blog/microsoft365insiderblog