I just bought a 17" yesterday and its an amazing machine. I highly recommend it. Do you really thinkt that Apple would update their 17" in 6 months time, I mean, the machine was just launched. Wouldn't it do harm to their sales of the 17'. They just released it! And plus the fact that people would get highly annoyed as well. I've had my PB 1ghz for about a year now, and it took only about a year for its line to be updated, so im thinking that it will take roughly a year for the 17" to be updated, however I might be wrong (by updated, i mean by hardware, not software like os x 10.3). I also think that the new 15" would still retain the g4 chip due to the simple fact that if they were to introduce the g5's, it would harm sales of the 17" and 12" that i iterate were just released. Just my 2 cents. I might be wrong though... only time will tell 😎 🙄