19-April-2026 Below you will find a collection of news published yesterday. This news consists of Microsoft’s Roadmap when it is updated it will be below with items. Then there will be a section with the message center, if there is anything new there, this will be automatically included. And it contains a piece from blogs that I follow myself and would like to share with you. If I miss something in the blogs that do have an RSS feed, please let me know.
This entire post was automated via Microsoft Flow
have fun reading!
Items from the MessageCenter in Microsoft 365
| (Updated) Microsoft 365 Copilot: Updates to memory and personalizationCategory:Microsoft 365 Copilot ChatNummer:MC1158329Status:stayInformed | Updated April 17, 2026: We have updated the timeline. Thank you for your patience. [Introduction:] We’re updating Memory in Microsoft 365 Copilot to improve personalization and enhance the user experience. With this update, Copilot will personalize responses using chat history, helping users receive more relevant and contextual replies. We’re also introducing refreshed user controls in Copilot settings to make it easier to view and manage Saved Memory. This will be available to all Copilot Chat users.
Control over personalization using chat history is also available, with details for users via the settings screen. [When this will happen:] - Public Preview (Frontier): Begins rolling out mid-November 2025.
- General Availability: Begins early January 2026 (previously early November 2025) and is expected to completed in May 2026 (previously April).
[How this affects your organization:] All users of Microsoft 365 Copilot in tenants where Memory is enabled. What will happen: - Copilot will use chat history to personalize responses, making interactions more tailored and helpful:
 - Users will see a redesigned Memory settings page that improves visibility and control over what Copilot remembers.
- Existing admin and user-level Memory settings are respected. If Memory is toggled off, it will remain off.
- No changes to admin controls or policy enforcement.
[What you can do to prepare:] - Review the updated Memory settings experience with your users once available.
- No admin action is required unless you wish to update internal documentation or training materials.
Learn more: [Compliance considerations:] | Does the change alter how existing customer data is processed, stored, or accessed (e.g. documents, emails, chats, etc.)? | Yes. Copilot will now use chat history to personalize responses, which changes how existing customer data is processed to generate contextual replies. | | Does the change introduce or significantly modify AI/ML or agent capabilities that interact with or provide access to customer data? | Yes. This update enhances Copilot’s personalization model by incorporating chat history, allowing it to generate more tailored responses. | | Does the change provide end users any new way of interacting with generative AI? | Yes. Users will receive more personalized and contextual responses from Copilot based on their prior chat interactions. | | Does the change allow a user to enable and disable the feature themselves? | Yes. Users can manage what Copilot remembers through the updated Memory settings page in Copilot settings. |
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| (Updated) Microsoft 365 Copilot: Navigation refresh in the M365 Copilot appCategory:Microsoft Copilot (Microsoft 365)Nummer:MC1187677Status:planForChange | Updated April 17, 2026: We have updated the timeline. Thank you for your patience. [Introduction:]
The Microsoft 365 Copilot app now features a simpler, cleaner navigation experience. We’ve flattened the menu and grouped features logically so it’s easier for users to find what matters most.
This message is associated with Microsoft 365 Roadmap ID 518222.
[When this will happen:]
- Targeted Release: Rollout begins in mid-November 2025 and is expected to complete by late November 2025.
- General Availability (Worldwide): Rollout begins in December 2025 and is expected to complete by late April 2026 (previously end of March).
[How this will affect your organization:]
- Who is affected: Users of the Microsoft 365 Copilot app for Web, Windows, and Mac.
- What will happen:
- Navigation is simplified with a flattened menu and logical grouping of features.
- For users with a Microsoft 365 Copilot license, the Apps entry point is now located in the navigation footer, next to Settings.
Screenshot: Comparison of current (left) and refreshed (right) M365 Copilot navigation. The new design groups agents, notebooks, and recent chats directly in the left rail. Features shown may vary by license type and admin settings. 
[What you need to do to prepare:]
[Compliance considerations:]
No compliance considerations identified, review as appropriate for your organization. |
| (Updated) Anthropic Claude Sonnet is now available in Microsoft 365 CopilotCategory:Microsoft Copilot (Microsoft 365)Nummer:MC1247880Status:planForChange | Updated April 17, 2026: We have updated the content. Thank you for your patience. [Introduction]
We’re expanding model choice in Microsoft 365 Copilot with the addition of Anthropic Claude Sonnet for users with a Microsoft 365 Copilot license. Claude Sonnet is available in Copilot Chat in Frontier, alongside the latest OpenAI models, giving users the flexibility to choose the model best suited for their tasks. This expansion reflects our commitment to delivering the latest AI innovation for work—while maintaining the security, compliance, and privacy standards customers expect from Microsoft.
[When this will happen:]
- Frontier availability: Claude Sonnet is available now in Frontier.
- General availability (web/desktop/macOS/mobile): Rolling out gradually; expected completion early April 2026 (previously late March).
[How this affects your organization:]
Who is affected:
- Users with a Microsoft 365 Copilot license
Who is not affected:
- For Government and Sovereign clouds, Anthropic models are not available and will not be visible in the model selector
- For Tenants in EU/EFTA and the UK Anthropic is off by default and requires opt-in
What will happen:
- Microsoft 365 Copilot licensed users will be able to select Claude Sonnet as an option in the model selector within Copilot Chat.
- In regions where Anthropic is configured as a subprocessor and is set to Off by default, admins can choose to opt in to make Anthropic models available for their organization.
- Enterprise Data Protection for Microsoft 365 Copilot continues to apply, with no changes to existing protections.
- Anthropic operates as a Microsoft subprocessor under the Microsoft Data Protection Addendum and Product Terms.
- Anthropic models are currently excluded from EU Data Boundary and in‑country processing commitments.
[What you can do to prepare:]
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