The Mac Pro "should" see USB 3.0 (X68) this year. Then again we all know the Mac Pro is a bag of hurt.
Why is the Mac Pro a bag of hurt? Just curious as I could never afford one (with the taxes here in Brazil the Mini already costs the equivalent of USD 1300, and that's only because it's at a discount price now. Before it used to be R$ 2500 which is... *opens calculator* 1560 USD!)