Thunderbolt is real and should clearly be showing Apple’s hand in regard to USB 3.0 — meaning I bet the stay with Thunderbolt + USB 2.0 for a while. If Thunderbolt takes off they will never have a need for USB 3. The new Pros also feature the new FaceTime HD camera, touting 3 times the resolution and better low-light performance — two areas that really needed improvement.
Also: everything else is touch faster.