In den
FAQ steht es:
Supported deployment platforms
PCs and tablets with Intel/AMD processors running Windows XP or later. Macs running
OS X 10.7 or later. iPhone 3GS or later, iPad, or iPod Touch 4th Generation or later running iOS 5.16.0 or later. Android phones and tablets
with ARM7 processors, running Android Gingerbread (2.3.3-2.7), Ice Cream Sandwich (4.0.3 and 4.0.4) or Jelly Bean (4.1.x, 4.2.x and 4.3.x).
Für X86 wird es wahrscheinlich zunächst in Richtung WinRT gehen.