Well, this is sounding on every corner of the Internet, there is a supposed Apple swicth from PowerPC to Intel processors. I don´t know if this is true or not, but comming from Apple, it can be. They successfully swiched from the Motorola 68000 family to PowerPC, (although they loosed many clients), so why not again?.
Perhaps it’s only a commercial tactic to get more attention from IBM, but who knows?. Apparently Apple is having many problems with PowerPC processors in laptops.
UPDATE: Now it´s official, Steve Jobs announced it officialy. Read about it.