FIRST LOOK: Microsoft is currently selling the idea of Windows and Copilot as two separate things: an OS and an assistant riding along on top of it. However, a leaked video shows Project Aion, an internal prototype where Copilot doesn't just sit inside Windows, it becomes Windows, swallowing the Start menu, the taskbar, and three decades of desktop conventions in the process. The footage is reportedly two years old, so Aion is most likely dead by now. But it's the clearest look yet at how far Microsoft was willing to take its agentic AI ambitions.
Back when Copilot was still a brand-new AI experience, Microsoft was already trying to turn the service into a cloud-based OS. That experiment appears to be long gone now, but Microsoft is apparently still trying to bring Copilot everywhere, despite stating otherwise.
The Aion clip first leaked through BetaWiki's Discord server, describing a web-based agentic OS with the Copilot AI baked directly into the system's core shell. The system runs on "Win3," a supposedly new Windows codebase designed to be lightweight and entirely web-based. The Edge browser, and by extension Chromium's layout engine, serves as the shell powering Copilot's new AI experience.
