If the IBM PowerPC 970 weren't enough reason, the fact that IBM is even thinking about, much less building a next generation chip should be enough to get Apple's attention.

According to this article in InfoWorld, IBM is releasing preliminary information about the road map for the upcoming Power5 architecture.

The new CPU family will replace the Power4 across the board and appears to be designed to handle the heat and power requirements from the low end to the high end.