Microsoft has developed an internal prototype of a web-based operating system centered around
Copilot, where the AI assistant replaces the Start menu, taskbar, and traditional desktop shell, according to a leaked video reported by
Windows Central.
The project, called Aion, was built on a codebase named "Win3" and used the
Edge browser as its shell. The video first appeared on BetaWiki's Discord server and is thought to be around two years old.
Sources verified the clip's authenticity to Windows Central. Microsoft has not commented on whether Aion was an internal hacking experiment or a product proposal, and the current status of the project is not known.