I've been waiting for quite a while now, looking to replace my PowerBook G4 12" 1.33GHz. The combo of the case re-design, switchable graphics (even if it needs a logout), latchless, new touchpad, side loading DVD, all ports on one side, new battery style, side battery indicator, a Hard Drive that is replaceable without major surgery... and all the other improvements of brought from the previous MacBook Pro's like LED display.
All of it was worth it to me... so a 2.8 GHz MBP is on it's way to me now.