I know that our solution specialist Allyson Skene and Technical Specialist Alistair Speirs are spinning it up on Windows 7. I think I will probably VHD boot an image to play around with – perhaps one of them will be so kind as to create me one!
If you fancy testing it yourself. You can signup here
If successful, Microsoft Office 2010 will redefine how people will work, not just add new features.