If it's a similar form factor, that's great. I hate the current thick bezel, and 7" would take the screen nearly to the edge, which would be nice. Also means I might be able to see the damn text in Three Houses a bit better. :P
I'm guessing the 4K isn't going to be native and will have to have some kind of CB/AI upscale implementation. Anyway, whatever the case, hope this all means that the current array of games that don't consistently hit their target framerates will be nice and smooth on the new kit.