The new Outlook for Windows also includes two release modes: a standard (default) mode and a targeted release mode. Unfortunately, the release mode is controlled by the global release preferences in your M365 tenant.
SharePoint document libraries now support AI Actions such as summarization, FAQs, and audio overviews. Although Microsoft lists Copilot as a requirement, the feature also works when billed through SharePoint Agent PAYG.
Teams now extends its impersonation protection to tenant-owned domains. When an external user contacts your organization for the first time, Teams scans the sender for both brand and tenant-owned domain impersonation risks.
Microsoft Whiteboard is retiring the ability to add PDF and PowerPoint documents from OneDrive and SharePoint.
Microsoft is expanding the Edge Management Service to support cross-platform cloud policies for Windows, macOS, iOS, and Android, giving admins a unified place to manage Edge for Business settings across devices.
Microsoft introduced several new licenses, changes to Dataverse storage, and fresh promotions for Microsoft 365 Copilot Business starting 1 December 2025.
Microsoft will enable ZAP in Teams for organizations with Defender for Office 365 Plan 1 starting in January 2026, with an opt-out option available for security admins.
Legacy IDCRL authentication in SharePoint Online will be retired starting February 2026. Admins should review Purview Audit Logs and update any applications still using legacy protocols.
A new Power Platform Inventory is available in the Admin Center. Microsoft has also introduced an API to query the same data with code.
Microsoft will enforce Content Security Policy (CSP) for SharePoint tenants starting in March 2026. Report-only mode runs from April 2025 to February 2026. Admins should review CSP violations now to avoid broken custom scripts and components once enforcement begins.
Shared Channels in Teams now support apps for bots, tabs, and message extensions, with Private Channels adopting the same model soon.
Microsoft is rolling out an updated navigation for the Microsoft 365 Copilot web, Windows, and Mac apps. The update flattens the menu, surfaces key features in the left rail, and relocates the Apps entry point to the footer for licensed users.
Entra ID now supports multi-device passkeys, allowing users to store their passkey in password managers like 1Password for seamless, passwordless sign-in.
Microsoft will retire Teams-specific feedback policies, as Teams Mobile is the last remaining platform. Feedback policies should now be managed by the Cloud Policy service.
SharePoint Online Management Shell now supports app-only authentication, enabling secure unattended automation with Entra ID app identities.
The People Agent in Microsoft 365 Copilot helps users understand colleagues, prepare for meetings, and find expertise by surfacing relevant People Skills from their existing Microsoft 365 data.
If SharePoint cannot set or update a user’s OneDrive storage quota, the root cause is primarily a reused UPN. The Diag support tool corrects the mismatch so storage settings work again.
Microsoft has added a new option to the SharePoint Knowledge Agent: per-site opt-in. Administrators can now enable the agent only on selected sites, giving more control during the Public Preview.
Researcher Agent with Computer Use enables secure web interactions in a sandboxed environment, generating richer outputs based on both web and organizational data.
Microsoft will retire the Visio Data Visualizer Add-in for Excel in March 2026. Existing diagrams in Excel will stop rendering. Users must export their diagrams to Visio format before the shutdown.