Dual booting isn't a perfect solution but I'm sure it's a lot easier than trying to design a UI that can adapt to screen sizes as disparate as a phone screen and a monitor. I'm a little leary of hardware pre-orders as it's easy to get burned but I'll definitely keep an eye on it.
It's billed as a handheld gaming system but you don't have to play games on it.
Runs Windows 10 on a 5.9-inch 1920 x 1080 screen. Atom processor.
Whether it will lever get made is another matter (it's an ex-Kickstarter project now taking pre-orders), but the approach is interesting.