In December 2025, Microsoft rolled out at least four preview builds for Windows 11, rolling out a bunch of new features and changes, including Model Context Protocol (MCP), Update Orchestration Platform (UOP), Xbox Full Screen Experience for PCs, Ask Copilot, AI agents for Taskbar, Agent Launchers, and a lot more, and here's all you need to know.

source https://www.windowscentral.com/microsoft/windows-11/windows-11s-december-insider-update-brings-new-features-and-more-ai-integration