There have been multiple rumours of Windows 12 being basically EdgeOS and just a gateway to the web with all apps and compute in the cloud. Some articles I've read and videocasts I've watched say "Microsoft have realised it's not about the hardware, but the software and selling subscriptions and services". So, from my very limited and uneducated view, windows 12 would be the perfect vessel for doing just that. But they can only do it if there is good internet in the majority of the world, so my prediction is windows 12 will come in ~2032 or so.