I've been debating weather or not to wait for the revisions to come out, and have decided to wait. The next revision of powerbooks wont have G5's in them, but they should have faster processor (heard rumors of 1.5, 1.8, & 2.0), possibly 7200 RPM hard drives, and also possibly a mobility 9800. I would guess that the new revisions will be comming out sometime in november, as apple has been pretty good at updating powerboods every 6-7 months, and november would be 7 months since last updates.