Apple changing back to the PPC?
Apple will change CPU whenever it suits them best.
Remember, they have a lot of experience with that already.
From the 6502 to the 68000, to the PPC, to Intel.
And they do it smoothly, supporting the old platform for years afterwards.
PPC has a real advantage over the Intel x86 platform; power requirements.
We now have a new market where small, lightweight machines with long batterylife is in demand.
And guess what, the iPhone doesn't fulfill the requirements...
Imagine taking the venerable iBook, scaling it down to a 9" form, tossing away the Superdrive, replacing the HDD with a SSD, getting rid of most of the ports(who needs a modem and RJ45 wired network these days), and tossing out the old G4 and slipping in a new iPPC(tm) custom designed for the job with USB, FireWire and all that on-chip?
(custom chip = less clutter on the motherboard, easier tracing and fewer components = smaller size)
Probably just my dream... caused by having my 12" iBook in 'sleep' mode on the desk beside my bed last night...