I saw that somewhere, wasn't really impressed, there's any number of
free operating systems. People just take what comes with their phone,
I don't know myself how you'd install them.
The kicker might be Windows 8 which Microsoft hopes will run on tablets
and phones and interact with the desktop OS. I don't know about
phones but MS is supposed to release the Consumer Preview of 8 (beta)
tomorrow and I'm going to install it to test some more. Already run
the Developer's edition in Virtualbox but it doesn't have much working.
So far it looks like they haven't much changed the desktop part, just put
Metro on top of it. (Did away with the Start button though)