IBM Power4 and Apple claims that IBM and Apple are in discussions with the 64-bit Power4 design that is to be discussed at the Microprocessor Forum 2002:

Network equipment and other communications gear is the most likely destination for the new PowerPC, as the bulk of existing PowerPCs are used there. However, IBM is also wooing Apple, sources familiar with the chip said. The company is in a constant tug of war with Motorola, which makes most of the PowerPC chips slotted into Macs, for Apple's business.