I know two things that are facts in test and development, I do not know which we will see. There is confirmed rumors of the dual G4 powerbook I know nothing other than the fact that they are toying with this. However I do know there goal was to try and stick a g5 in a 17" aluminum casing. They have not completly ruled out forced induction via whisper fans, they are trying some kind of an air tunnel that travels through the notebook pulling in cold air and a heatsink along this whole tunnel to disapate heat. The other ofcourse which I am sure people in here have heard about is toying with liquid cooling, however a much more complex system. I beleive it used many, many small tubes that go through a heatsink and then travel a very long stretch back to cool the liquid then do the same thing again. This is all in the works of testing, not near production even. I don't know how much I want a 3 thousand dollar notebook using liquid incase I drop it either, then what do you do about the no warranty for liquid damage!!!! I would say you will not see any g5 iBook until 2007 possibly 08 but 07 would be the year to shoot for. The iBook is a value notebook, do you really want the 999 price to jack up to 1,600 base? Most likely that price is unreleastic due to all the technology provided in this. Also the G5m sounds like a great idea however, IBM makes no such thing. If IBM doesn't make the chip yet, then you will not see that for a longgggg time!!! We are talking 2 - 4 years in developing and testing and another year to produce millions of them!!