Windows 11 has an in-development hidden feature called "Speak for me," allowing users to create a voice avatar for communication or have text spoken aloud. It's enabled using ViVeTool with the command 'vivetool /enable /id:47123936' and can be toggled on or off with keyboard shortcuts or via the Windows Settings app under Accessibility. The feature, part of Windows 11 build 26052, is not fully operational yet.