Or WOA, as Steven Sinofsky highlights in his post about porting Windows 8 to the ARM architecture. Sinofsky also answers one of the bigger questions about WOA, will it run “full” Windows:
WOA supports the Windows desktop experience including File Explorer, Internet Explorer 10 for the desktop, and most other intrinsic Windows desktop features—which have been significantly architected for both touch and minimized power/resource consumption.
To be honest I am not sure what the hell that statement means. What I think it means is that, yes, you will get full Windows — but that full Windows will have been optimized for tablets running ARM chips.