I wonder what the "actual" (non-marketing) version number will be, since Windows 8.1 is actually 6.3... But I guess this is marketing departments for you. (Meanwhile, Apple have been releasing version 10 for about 10 versions over now.)
Hopefully this is a return to a more sensible direction for windows. MS needs to realise that Windows is not, has never been and will never be "cool" in the way that Apple or Android can be, but that they're simply the best enterprise/productivity OS and that's not a bad thing.
I think the only people who think an OS is "cool" are the fanatics/evangelists anyway, so less of those is a good thing I'm sure I have come across MS fanatics in my time, though a mainstream OS is more likely to have the fanatics drowned out by the regular users. Millions of people do fun things with their PCs, not just enterprise and productivity. They don't think of "Windows" specifically, but that's because people think in terms of their whole gadgets/devices rather than something like an operating system (and the same is true of Apple and Android users, the average user doesn't care about OS X or Android specifically, rather their laptops or their smartphone). I think that MS should cater for consumers and business user, not just the latter. The Windows 8 debates were about UI preferences, not about fun vs productivity.