Well if it actually works, and that's a big IF.. the thing I'm most excited about is the fact that Microsoft is starting to get with the program and they've decided to make win 10 run on ANYTHING and also run apps from virtually every other OS. It's supposed to run on your laptop, your tablet, your netbook your phone, the raspberry pi, the intel Edison... everything. It'll run windows apps it'll run android apps, it'll run iOS apps. I think it'll even do Linux, but don't quote me on that.
So this is just assuming they pull that off, the license is affordable and it isn't some b.s. fake-out like windows 8 RT (not really win 8, just looks like win

if I write an app for windows 10 on the desktop, it'll run on anything and I don't have to write another version. I know some people won't get what a powerful concept that is, but I assure you it is.
The sad thing is, I think if the reception for win 8 had been better we'd already have this... but when you make your desktop os default to it's tablet interface, that's what happens.