Personally I'm more in the wait and see camp for Windows 8. On tablets or low angle touch screens it could be very interesting. Granted, like most businesses just now getting Win7 in place, win8 will be the version skipped outside of what personal devices users try to bring in after Christmas.
For ChromeOS and Android, why even integrate them? What does ChromeOS provide that can't be provided under Android. 4.2 bring multiple user profiles so ChromeOS won't even have that. More likely, it'll simply be Chrome browser on top of Android OS. Heck Google has even finally started addressing the mass of vendor's child distributions based on Android.
Ubuntu is also a wait and see with the more recent focus on the proprietary repository but yeah, a default install with the expected proprietary titles may do well with consumers depending on price point (and there would have to be a retail cost to cover the proprietary licenses at least).
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