I sure hope they figure out a way to put a G5 in the powerbook. These dual core G4's would be phenomenal additions to the emac and ibook, but the powerbook is a product geared towards professionals and should have the top processor running at 64-bits and a bigger front side bus and L2 cache. These dual core chips are admittedly much better than the G4's the powerbooks are currently running on, but the next step has to be the G5, especially now that they put one in the iMac. I'm a little miffed that a consumer product landed a G5 before all the pro macs had them, but given the design complications I can understand. But now that it has been proven that a G5 can be shoved into a small space, Apple needs to get it into the powerbook.
-Joe