I agree that the powerbooks will be released very quietly but since phil, the vp of apple, will be giving a speech it seems plausable that he might mention it then. Other than that it wouldn't surprise me if they had an update the day after the ipod+laptop deal went bad b/c it's just the sort of thing they'd do. I really hope that they release it at macworld and i hope it has the following updates: al case, faster processor, memory on par with 12 and 17, a non crippled optical drive (finally 2x dvd-r on a powerbook), and a new video card whether it be nvidia or ati (methinks it will probably be nvidia), and airport extreme support. Additionally I heard rumblings about a new 15.4" screen but I'm not sure the validity of the rumor. Basically whether it is g4, g5 whatever i just want it before I have to go to school.
-Steve