Windows 8 is a rebirth, a "reimagining" of Windows and the entire Microsoft brand. It's also the single riskiest project that Microsoft has ever embarked upon — a bet from Redmond that users can adapt to a new way of computing. With mobile alternatives from Google and Apple eating into sales of traditional PCs, Microsoft needed to act quickly to protect its Windows revenue. A short testing phase of under a year from Developer Preview to a finished product in stores shows that Microsoft is serious this time around. The result? An entirely new Windows user interface designed for touch and a new generation of Windows apps. This isn't the Windows you're familiar with, but is that a good thing?