Go ahead and buy. Any speedbump to the G4 line is likely to provide only minor performance improvements because of the relatively slow mobo architecture, etc. I will say to stay away from the 17" model. For some reason they seem to be less responsive in certain scenarios than the 12 and 15" models (possibly because of the extrain strain on the video card).
Anyway, one of Apple's reps emphasised (again) this week, that not only the heat but the size of the G5 chip is too large to be used in Apple's existing laptop enclosures (and they're certainly not likely to make the enclosure larger to suit the chip), and said "not anytime soon" again. As neat and tidy as the new iMac is, it's still a LOT bigger / roomier inside than a laptop.
I don't think we'll see a G5 laptop until after Tiger is released, to give some time-frame perspective. That's the next "big thing" that's coming IMO.
...into the light of a dark black night.
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