"The opportunity is with Windows. Applications will run on all new Windows 8 PCs, laptops, tablets. Any Windows 8 PC is your target customer - so the market could be 400 million people on launch."
Errm if Win 7 has just got to 450 million people several years after launch, seems that the launch numbers are out by a factor of ten or even 100.
Be great to see some proper cleaning up of the messy interface and more importantly the messy underbelly, sadly I only expect more of the current trend of dumming down, build it for monkeys thinking. (There is a difference between treat everone as idiots (current programmer styles) and treat everyone as humans who learn, like to understand but can get confused with inconsistency and random behaviours).