I concur with some of the sentiments above:
Win8 Desktop experience = poop
Win8 Tablet/Mobile experience = probably not poop
It really is bizarre.
Clearly they have chosen to "break" the desktop experience somewhat in an effort to gain a place in the post pc tablet world, eventually shifting to a metro-esque single unified OS which doesnt suffer from bi-polar. The problem with that is you are never going to want to work in maya or final cut pro in metro style because metro simply isnt suited for that type of work.
You are always going to have trucks and cars, combining them in the way microsoft has chosen just leaves you with an OS which does each job less optimally than if they were more separate. If all this tablet stuff wasnt impacting the desktop experience negatively i would be fine with its inclusion, but it does, which makes me wonder where exactly microsoft intends to take this?
What's going to happen, is the desktop going to be reduced even further in windows 9 or not? If yes, then what about professional apps which just won't work well as tablet apps?
It seems to me apple are doing a better job solving the truck/car problem. It makes more to keep IOS and OSX separate, with each only sharing applications and functionality over time where it makes sense. e.g. mail, calendar, browsers, settings, user content, basic applications, etc. Sure, IOS is crap at multitasking and the like, but that can come quite quickly with subsequent updates - updates which take into account the various peculiarities of each platform. Shoehorning everything onto everything just doesnt make sense if you care about building a fantastic experience.
Microsoft, you suck.
Its like choosing to build a dual purpose cricket/rugby stadium with the net result being a crapper experience with the stands being further away from the field when playing rugby. Boohoo.