Microsoft has slowed down the development of Windows 11 but released several preview builds through the Windows Insider Program in December 2025, showcasing various enhancements. Key updates include:
- Model Context Protocol (MCP): Introduced in build 26220.7344, allowing AI agents to communicate with applications and tools via a secure on-device registry. It includes the File Explorer Connector for managing files through natural language searches and the Windows Settings Connector for navigating settings.
- Unified Update Orchestration Platform (UOP): Provides a consistent update experience for developers through the Settings app.
- Windows MIDI Services: Rollout of a new MIDI API, Service, and SDK, supporting MIDI 1.0 and MIDI 2.0 devices with enhancements like app-to-app MIDI support.
- Xbox Full Screen Experience (FSE): Expanded to additional handheld gaming devices, replicating console gaming on PCs.
- Settings app with AI agent: Enhanced navigation and modification of settings with an integrated AI agent.
- File Explorer dark mode improvements: Extended dark mode to various elements and improved search functionality using AI.
- Drag Tray disable option: Users can now disable the Drag Tray feature through Settings.
- Mobile Devices settings integration: Features for managing mobile devices are now integrated within the Settings app.
- Virtual Workspaces in Advanced settings: New access to manage virtualization features without using the legacy "Windows Features" page.
- Keyboard and text cursor settings: New settings added for customizing keyboard and cursor behavior.
- Quick Machine Recovery improvements: Now enabled by default on Windows 11 Home and Pro editions.
- Windows Studio Effects compatibility: Expanded to more camera hardware for improved user appearance.
- Windows Spotlight for desktop changes: New context menu options for wallpaper changes and additional details.
- Taskbar with Ask Copilot: A toggle to replace Windows Search with AI-driven searches.
- Taskbar with AI agents: AI agents can function as apps in the Taskbar, providing real-time updates.
- Windows 11 Agent Launchers: A framework for registering AI agents within the OS.
- Narrator customization: Users can select which properties are announced while navigating applications.
- Voice Typing animation: New animation for the dictation key in the Touch Keyboard and a "Discover Windows" widget added.
- Voice Access streamlined setup: Simplified setup process for Voice Access.
The Windows Insider Program will pause further builds until January.