That's what I was wondering. It seems kind of weird AMD wouldn't have a chipset that could support it. My guess is that its backwards compatible with 2.0 it just doesn't move data as fast as 3.0. But yeah it would be nice to know for sure.
Edit: Just saw TriRan's post. Thank you for the info man. That is what I was thinking. Glad to know though. And yeah I would think that the difference from 2.0 to 3.0 wont really make a difference for a while.