The last PPC PB revision can be summed up as a skeleton crew manning a sinking ship: not enough manpower, not enough resources to solve the problems. Now we're not even upgrading to the 7448???!!! Apple apparently was waiting all this time for the 7448 to be available in quantity, but I'm betting they've done nothing else productive with all that time. No attempt to do PCI-express, etc. So we'll end up with the same updated components that we could have had weeks ago--ATI 9800, 7200rpm HHD, etc.--and not even a 7448, for all the extra waiting. If Apple still gave a crap about the PB maybe they would have had enough people and resources to overcome the apparent 7448 reliability problems and maybe even do PCI-express. Now, however, we're looking at getting the same sucker bump we could have had weeks ago, since Apple didn't even put enough resources into making a pin-compatible CPU upgrade work. Apple has somehow managed to be both shortsighted and too forward thinking (think Intel) at the same time. The 7448 was the one part of the PB revision everyone pretty much took for granted, but Apple has proved so negligent, and thus so incompetent, that now we are stuck at 1.67 gHz with the current 7447A and its 166 FSB.
If Appleinsider is right about the 7448, I'm calling this debacle the 2005 PowerBook Speed Dump. That being said, let's not le the PB anger flood the thread--the new PMs sound awesome and I am now seriously considering buying one of those instead. I'll go have some kool-aid and calm down.