Its a shame they're doing this 🙁 Windows 8 seems great if you ignore the interface, hacking the classic start menu instead of that fullscreen obtrusion was the only way to save this OS.
If you're like me you like to run a lot of things at once, sometimes having around 8 things on screen at once (gets awfully cramped on a 22" screen). This will be harder to do with metro being forced on us. 'I see you have a lot of windows open, let me just open my full screen start menu so you can open another one, which if its a metro app, will also be full screen'
I also dread to think how cluttered the start menu will get over time. I remember the old XP days where you could be running 1280x1024 and your start menu would fill the screen from so many apps being installed. With metro that will be hell to have hundreds of gigantic tiles which you have to scroll the entire screen to see. Sure there's search but that kind of defeats the object of having the tiles there in the first place.
From a business point of view Win8 is terrible. Its limits the productivity and the efficiency of getting work done. And their server changes... they need shooting.
I have been messing around with Server 8 lately as i am studying for an MCITP in server 2008 and thought it'd be nice to know future tech too. What did i find? Half the stuff i'm learning no longer applies and it takes a lot longer to do ANYTHING. I think the only way businesses will adopt server 8 (or 2012) will be the server core option, assuming that will still be possible.
Not to say Win8 will fail, since there's consumers out there which will like this (most of them already own an apple product so they're used to sh*t), but i can't see professionals adopting this, i certainly wont.