I wish I could know what all this stuff is. But I'm neither old enough (next year) nor have the money to go to WWDC. When I read about Xcode 3 and Obj-C 2.0 on the website (because it wasn't mentioned in keynote), I thought those two things alone would be worth the price (whatever it is) for Leopard. I seriously want a new IB and bubbles in Xcode!