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Yes, it's one OS for all Windows devices.

• MatthewPhillips 15y ago
  I think that's the eventual plan, but Phones will still have their separate OS for now, right? Unless they announced something differently today...
  • Lewisham 15y ago
    Phones will continue to have a separate OS, but as both are branded Metro, I would hazard most users wouldn't be aware of there being any difference. One is just on a smaller screen and doesn't come with the desktop fallback. Metro will also be appearing on 360 soon.
    • josephcooney 15y ago
      Really? I'd heard the opposite - Windows Phone 8 will _be_ Windows 8. Has anything been said at Build to the contrary?