An interesting question really is... What will they call Windows 7?
It's going to have to be different enough from Vista to sell.
But MS has already sunk $500M into Vista marketing.
But there's such a thing as "good money after bad"
But they don't want to straight-up say "Vista sucks" so they can't deviate too far from it.
I'm still lobbying for Vista Mea Culpa Edition (tm) -- Vista MCE (tm) for short.