Windows 10 takes a step back, depending on your device, or its status that is. An intriguing notion, I wonder why they need to bring out a completely new operating system, or should I say a new number for their operating system. On the point of them still using numbers, I think I'd like to see companies move on from such titles. A new name, you would hope, would mean a new product and advancement.
However, it's possible there will be some kind of Hardware check to confirm compatibility. This makes sense, but could rule out any attempt install and them look for backward compatible drivers, or rather, forward compatible drivers. Whatever the case, it's going to be a freebie for a year.
Just be a nutter... life becomes much more exciting, and people won't expect anything more of you...