
This article from Hal Berenson has an interesting take on Windows development of the new UI, programming model, and ARM support up to Windows 8.
The way I think people should interpret Windows 8 is that the Windows business was at the precipice, about to start a prolonged decline. Microsoft decided it was time to go big or go home.
I agree. If Windows 8 is not a big hit, then Microsoft goes the way of IBM in the early 90s. If it is a hit, we will have a very business-worthy platform with modern technology.