Explore the October 2025 Microsoft 365 and Copilot updates, including GPT-5 as the default Copilot model, enhanced Teams collaboration, new meeting productivity tools, improved AI search, and new Copilot Studio agents for HR, IT, and app creation.

GPT-5 is now the default model in Copilot Chat, and users can select how much reasoning Copilot applies when generating responses. Three modes are available:
When this will happen
General Availability (Worldwide): December 4, 2025 – December 8, 2025.
How this affects your organization
Who is affected: All users with access to Microsoft 365 Copilot.
What will happen:

New Word, Excel, and PowerPoint agents are being introduced in Microsoft 365 Copilot to support content creation directly within Copilot Chat in the Frontier program. These agents use web and enterprise grounding to assist users with creating documents, workbooks, and presentations. Each agent supports multi-turn chat, allowing users to refine and iterate content through an interactive conversation.
When this will happen
Frontier Public Preview (Worldwide): November 18, 2025.
How this affects your organization
Who is affected: Users in Frontier program tenants with Anthropic enabled.
What will happen:

The Explore Pane introduces a guided side panel in the Microsoft 365 Copilot app to help users learn how to use Copilot more effectively. The experience provides contextual, step-by-step guidance across the Create, Search, and Notebooks modules to support user adoption and help users build confidence with AI-powered workflows.
When this will happen
Targeted Release (Worldwide): Early December 2025 – late December 2025.
How this affects your organization
Who is affected: Users of the Microsoft 365 Copilot app on Web, Windows, and Mac with Commercial SKUs (Starter and Premium).
What will happen:

Copilot-powered summaries and insights will be available as a landing page within Copilot Notebooks to help users quickly understand referenced content. The feature will initially be available on the web in both Preview and General Availability, with support for iOS and Android planned for a later release. A Microsoft 365 Copilot license is required.
When this will happen
How this affects your organization
Who is affected: Users with a Microsoft 365 Copilot license and access to Copilot Notebooks.
What will happen:

Support for connected agents is being introduced in Microsoft 365 Copilot, enabling one agent to query another for additional context or data. This enhancement allows agents to provide more complete and informed responses. For example, the Researcher agent may request sales or inventory information from other enterprise agents when needed.
When this will happen
Public Preview (Worldwide): Mid-November 2025 – late February 2026.
How this affects your organization
Who is affected: Admins managing Microsoft 365 Copilot agents in the Microsoft 365 admin center. This applies to all licenses that include Microsoft 365 Copilot Chat, including free and paid versions.
What will happen:
Screenshot 1 - Early draft UI (experience subject to change closer to rollout):

Screenshot 2 - A second view of early draft UI (experience subject to change closer to rollout):

OpenAI’s Sora 2 model is now available in Microsoft 365 Copilot, enabling users to generate short, realistic 720p videos from text prompts within the Create experience. Videos include synchronized audio and are stored securely in OneDrive or SharePoint, inheriting existing compliance and governance settings.
When this will happen
How this affects your organization
Who is affected: Users with Microsoft 365 Copilot access in Frontier-enabled tenants.
What will happen:

The Interpreter agent is now available in Microsoft Teams Rooms on Windows for devices with a Teams Rooms Pro license. This feature enables real-time interpretation in up to nine languages, allowing participants to speak and listen in their preferred language. It also includes an option to simulate a participant’s personal voice for a more inclusive experience. No Copilot license is required.
When this will happen
General Availability (Worldwide): Rolling out early January 2026 (previously mid-December 2025) and expected to complete by late January 2026 (previously mid-January).
How this affects your organization
Who is affected: Organizations using Microsoft Teams Rooms on Windows with a Teams Rooms Pro license.
What will happen:
Screenshot 1: Console

Screenshot 2: Front of room display

New capabilities are now available in public preview to simplify and secure collaboration with external participants including partners, vendors, and customers. The update focuses on reducing friction during cross-organization communication while providing improved administrative control.
When this will happen
Public Preview: Available now.
How this affects the organization
Who is affected: Microsoft Teams users collaborating with external participants.
What will happen:
The following capabilities are included in this update:

Forwarded Messages Links
When someone forwards a message in Teams, you'll now be able to click a link that takes you straight to the original chat or channel where it came from. Note: the link works only if the recipient has access to the original conversation. This enhancement improves message traceability and helps users quickly understand the context of forwarded messages.

A new persistent collaborative space is now available in Teams chat and channels. This enhancement supports structured collaboration, reduces message clutter, and centralizes work artifacts for easier alignment across teams and conversations.
When this will happen
General Availability: Available now.
How this affects your organization
Who is affected: All Microsoft Teams users.
What will happen:
Both features are designed to improve collaboration and reduce the need to scroll through long threads to locate shared content. No admin configuration is required.

Facilitator has been updated with new capabilities designed to support more structured, efficient, and action-oriented meetings. These enhancements improve context detection, automate meeting follow-through, and reduce the need for manual coordination.
When this will happen
Some enhancements are available now. Additional capabilities are currently in public preview and are expected to reach general availability in early December.
How this affects your organization
Who is affected:
Teams users with access to the Facilitator agent.
What will happen:
These enhancements are intended to streamline meeting workflows, improve clarity, and support faster follow-through after discussions.

Meeting recaps can now be formatted to better match team preferences and communication styles. Instead of a standard layout, users can select from predefined templates or create custom formats to ensure recaps are consistent, actionable, and easy to reference.
When this will happen
Public Preview (desktop and mobile): Available in December.
How this affects your organization
Who is affected:
Teams users who generate AI-powered meeting recaps.
What will happen:
This update supports clearer post-meeting communication and helps standardize documentation across teams without additional manual effort.


CEO at Penthara Technologies
What's new in Microsoft | October 2025 Updates
Explore the October 2025 Microsoft 365 and Copilot updates, including GPT-5 as the default Copilot model, enhanced Teams collaboration, new meeting productivity tools, improved AI search, and new Copilot Studio agents for HR, IT, and app creation.
What's new in Microsoft | September 2025 Updates
Explore Microsoft’s September 2025 updates across Microsoft 365 Copilot, Teams, and Edge – featuring multi-image uploads in Copilot Chat, personalized memory enhancements, streamlined email drafting in Outlook, and powerful meeting tools like Facilitator and Countdown Timer.
What's new in Microsoft | August 2025 Updates
Explore the latest Microsoft 365 updates from August 2025—featuring GPT-5 in Copilot, enhanced Teams productivity tools, smarter Outlook experiences, and powerful new features across Microsoft 365 apps.