I think Windows 8 is going to be a great OS for tablets and other touch devices....but for all of us without those capabilities, which is still probably a huge chunk of users, I feel Microsoft is just forgetting about. Sure tablets and touch seems to be the wave of the future, but I can see Windows 8 being a failure in the general consumer desktop and laptop computer market and possibly not very well adopted in businesses as well. There are some radical changes and I get change is inevitable, but I personally am not impressed with Windows 8 (the preview or beta). I found it to be kind of dumb using it on a desktop and hard with a mouse. So unless they make some different improvements between the beta, (release candidate if there is one) and final release I will be sticking with Windows 7. You would think Microsoft would learn from past OS and business mistakes...
Enough ranting though...