What is new in Microsoft 365 Copilot for September 2025

Welcome to the September 2025 edition of What's New in Microsoft 365 Copilot! Every month, we highlight new features and enhancements to keep Microsoft 365 admins up to date with Copilot features that help your users be more productive and efficient in the apps they use every day.

This month we have a special announcement to share – we’ve developed a new Copilot Chat Quality Roadmap to keep you updated on the new and enhanced features. You’ll find more information about it below.

Let’s take a closer look at what’s new this month:

User capabilities:​

• Work smarter and more efficiently with new updates to Copilot Chat
• Outlook email and calendar integrations in Copilot Chat
• Copilot Library and updates to Search and Create in the Microsoft 365 Copilot App
• Formula completion with Copilot in Excel
• Improved email management with Copilot in Outlook
• Update documents and fix spelling and grammar with Copilot in Word
• Thread summaries from Copilot in Teams
• Improve text with Copilot in PowerPoint
• Copilot now available in Viva Engage
• Enhancements and new innovations for agents

Copilot Control System:​

• Improved reports and controls in Microsoft 365 admin center
• Manage data security risks with Microsoft Purview Data Security Posture Management for AI apps
• Merge people data with other sources with Microsoft Copilot connectors