MacBidouille also posts two updates with rumors of the upcoming PPC 970.
According to the rumor posts, they claim that the 970 should be available as soon as July, and expect advances to a 0.09 micron process by Spring of 2004. Meanwhile, the Power5 derivative chip should come in between 2.8-4.5 GHz.
They also report that Apple is testing prototype PowerPC970 motherboards with GDR 400, USB 2.0 and AGP 8x.