I was just ion my local radio and television store today. Most of the computers being displayed there still has Windows 7 on them. (the 64 bit version, I think?)
Two or maybe four ? new computers were shown with Windows 8. I tried one of them; both were laptops. And they had the Windows 8 Interface with the tiles. And I have to say: I quite like it
I tried clicking on the tiles to se what happened, and it was really easy and intuitive to use
However, I couldn't get back to the tile menu? again.
I'm not that afraid now to get a pc with Windows 8, however I'll still be worried about playing older games on WIndows 8 computer.