Being able to run Windows on a flash drive has been the dream of many Microsoft loving fans, myself included. Microsoft is finally saying "yes" to those fans by including "Portable Workspace" in Windows 8. It enables a 16GB (or greater) external storage device and put a bootable, runnable copy of Windows 8 on there.
We don't know the exact details of the feature, whether it's a full install, a ghost-image, or if it can be done multiple times - but the feature is there. We'll keep you posted and as details leak and we find more, we'll continue to Windows 8 feature posts. Question, wouldn't this be a great feature for an Apple-based machine? Plugging in a USB stick with Windows 8 on it - somehow works through Boot Camp (or if it boots from itself). Ooooh the possibilities.