Windows 11 Preview Build 26120.3872 (Beta Channel) introduces advancements in Copilot+ PC functionalities and addresses issues with the OneDrive syncing app. Users can register for updates and access the Insider Preview by activating the “Get the latest updates as soon as they’re available” option. Notable enhancements include the ability to add custom words to the dictionary through voice commands and an improved guided tour for Voice Access. Additional updates allow users to disable cloud content searches, gain control over widget notifications, and fix Start menu crashes. Not all Copilot+ PCs will receive these updates immediately, with a focus on Snapdragon X Elite devices, though features will eventually be available for AMD and Intel-powered devices. The new accessibility features are available to all users immediately.