No more PB G4 15", but MacBook Pro shipping...
The Apple Online Store is out of those old PowerBooks (15") and only sells the MacBook Pro 15" now. That's a good thing, too. ;) ... You can take a look at the insides of the MBP here
, and first tests show that the MBPs should do "okay" even with Rosetta-emulated applications.
Battery life should be the same or better (really depends on testing) than the old G4 PowerBooks, according to first tests done by various readers who have received their MBPs by now.