IBM and Motorola Diverging
This MacCentral article reports on IBM and Motorola's continued divergance in goals and projects in regards to the PPC alliance.
IBM, Apple Computer and Motorola worked together to create the PowerPC almost a decade ago. However, the three companies paths have diverged since then. Loughran says that there are no co-development activities currently between IBM and Motorola.
IBM is currently sampling 1Ghz G3 750FX processors... though it's uncertain if these will be featured in any future Apple computers. The iBook (and CRT iMac) are the only shipping Macs with a G3 processor at this time.