None what-so-ever. These additional platforms are already accommodated by the NT kernel on which Windows has been built for the past 10+ years, only parts of the userland will be written to be made compatible with ARM.

Also, you need to understand that this will mean two codebases with parts that converge, not one codebase with small differences as to affect compatibility. The ARM version will be a different version of Windows and apps will work backwords on x86 just as they had so far; the corporate dependance on backwards compatibility is too high for MS to neglect it, and ARM plays no role in the corporate world.

What is this "net games" you are talking about? These damn things don't even have a keyboard! C'mon....

Well that's reassuring. So as long as they don't do anything else to bugger it up (as they did with Vista) then everything will be fine. That said, I've still yet to encounter a selling point of the OS. It's too early, really. Windows 7 and DX11 aren't really being used yet.

Well, in Vista's case it was more of a problem with hardware makers (drivers weren't updated to use the new driver model despite having enough time and forewarning about it) and lazy software developers that didn't want to update their software to properly use the new security layer. In any case, it won't be as the code is now being built up from a solid base (Server 2k8) and apps are already working on it properly (see Windows 7 and even Vista now).

As for Win 7 not being really used yet, I disagree. It's the fastest selling MS OS and has a bigger adoption rate than XP had at launch. Even a lot of large businesses have started the migration program towards Windows 7.

I meant used by software - particularly games. Some games flirt with the idea of using things like tessellation but it's early days yet.

Yeah, like comparing apples with pears. Same thing, indeed.....

They actually showed a device that transforms its bottom screen (it had two screens) into a keyboard when you touch it will your 10 fingers. Quite neat. :)

Or you can just, you know, plug a keyboard ;) This is not Apple we're talking about after all :D