I have very mixed feelings about it. I popped a spare drive into my m15 and installed it, and first impressions was that it's just not as intuitive as I would have liked. First, the Metro desktop wouldn't display. All I saw was a blank greenish color screen. It took me a good 15 minutes to figure out how to get to the start menu. There was literally no indicators of where to move the mouse - and I had to move it to extreme bottom left corner.
So I finally get to a desktop that makes more sense, and see there's an update to my GPU. Fine, I figured that's probably got something to do with my issues, so get it updated and rebootski.
So there's the metro desktop now, and IE is the very first thing there so I go ahead and click. Surf a little bit, try to get used to the navigation bar being on the bottom, and now I want to go back to the main screen.
Where's my close button? ESC, backspace, trying to "drag" sides of the screen - nothing. There's that "sweet spot" start menu again, but I ended up just CTRLALTDEL out of it - I don't want it running.
Now, I consider myself fairly intelligent, but this was a bit much. This clearly isn't ready to be a desktop PC's OS. I'm all for them using Windows 8 to compete in the tablet market, but I don't think that it's got much of a future for becoming the OS of choice for the rest of us, at least not in the near future. It needs to be a heck of a lot more intuitive and controllable.