it has been reported by the register that the next upgrade for ibooks and powerbooks will happen within the next 6 months (in q2 ‘05). this upgrade would not be just a speed bump for each machine, but rather a bump in processor from a g4 to a g5. let the speculation continue as i do not see how this is possible. this topic has come up many times before and recently as in the quarterly report conferences as reported by macslash. this news from the register is currently being discussed at slashdot with much doubt.