Or, ... They tell you nothing new is going to hit the stores so they can surprise you with the new stuff just a week before x-mass and because your dumb enough to trust executives you bought your machine way over priced and under spec'd but knowing apple it will let you get some in mail rebate even though the rebate will never make up for the losses.
So you will sell your mac on ebay and run to the apple store to buy the newest greatest mac ever.
Ohw and euhm ... i am a mac owner i love my ppc driven macs and i will love any ppc system ... so dont byte my flames !