PowerPC RoadMap from Motorola
Several readers have noted this PowerPC core roadmap announced by Freescale Semiconductor, a wholly owned subsidiary of Motorola.
According to the press release, Freescale detailed newly announced e300, e600 and e700 PowerPC cores. The e600 processor is described as "an enhanced version of the high performance G4 core used i nthe award-winning, high performance MPC74xx family of PowerPC host processors" and is expected to scale beyond 2 GHz as well as implement Altivec. The e700 core is expected to scale beyond 3GHz.
Freescale's implementation of these processors appears to be for specific system-on-chip (SoC) implementations, but presumably the technology could find its way into future Apple products as well. Apple presently uses MPC74xx processors to power their portable line.