Conclusion:
Yes, it's just a demo. No, it isn't the final product. Anything and everything you saw in the demo could change by the time Microsoft sticks a fork in Win8 and pronounces it fully baked.
But it's clear that Windows is in for big-time changes. Microsoft's trying hard to gussy up its 25-year-old cash cow and make it dance with iPads and Chromebooks and Androids. Only time will tell whether it'll be successful or whether Windows has started a long, slow descent into irrelevance.--Woody Leonhard, author of Windows 7 All-In-One for Dummies