Windows 12 could see a substantial system redesign in order to include a more AI-centric user experience. The start button could thus be replaced with Copilot AI, which is already available as a preview version in the latest Windows 11 update.
Only if it's shipping as the default OS on hundreds of millions of new devices, and easy enough that a 65 yo can install their 12 year old copy of TurboTax software on it, while their grandson plays Roblox on it. :P
Gotta be usable by the lowest common denominator before the return window at a rural BestBuy is up.