Source: Windows Team
quote: I just sort of faceplamed at this. If you want to run your legacy software on the go, buy a x86 laptop. They're not designed with a touch screen only interface anyway and those that want it would probably complain how crappy it works on a tablet.
quote: No recompiling or emulation of x86 on ARM. If you want to make software for an ARM tablet, it will be using WinRT for the Metro interface and go through the Windows Store. Period.
quote: The ONLY exception is that businesses will be able to sideload apps but they still have to be rewritten for WinRT and Metro. No desktop apps other than Office. On ARM tablets, they eventually want to get rid of the desktop.