Jon "Hannibal" Stokes adds in his voice on the Apple-to-Intel transition. He reiterates that it is Apple's plan on introducing x86 based Macs in the low-end and portable configurations first, where I think it also makes sense. Aside from the laptop series falling behind in overall performance, Hannibal notes that laptops and low-end macs are the least in need of high end PowerPC 970 (G5) features such as 64 bit support, and so on. The G5 is a nice processor and will be a nice one for the next couple of years, but it is a bit beefy (especially in its energy consumption / heat production) for portable and low-end machines, whereas Intel has made some highly effective mobile processors in recent years.
9.6.05. Hannibal on Apple-Intel