MacBidouille's latest report provides some potential Motorola information.
ZeeOwl again provides translation:
According to an internal source (thank-you Superced) Motorola has started producing 0.09 m chips in their Crolles 1 plant.
The go on to speculate the implications of this...
That's all we know, but if Motorola manages to produce G4s this small, they might be able to re-enter the frequency race.
It would be difficult to catch up with the PPC 970 in brute force, but a 0.09 m G4 running at 2 GHz would be an excellent replacement for the G3 in Apple's consumer line, particularily in the iBook.
It remains to be seen whether Apple would be willing to overlook their differences [with Motorola], and accept working with them towards a common future.
If we follow Motorola's Roadmap (which they rarely follow themselves), the 0.09 m G4s would be the 7457-RMs (originally slated for production in 0.1 m) which incorporate Rapid-IO to maximize memory bandwidth, the current G4's Achilles heel.