Powerbook 1.2GHz?

PowerPage posts some rumors about even faster prototype Powerbooks.

The good news is that the top end model could eclipse even the 1022 MHz PowerBook G4 mules in testing now. G4 silicon running as fast as 1200 MHz (1.2 GHz) has been spotted in the titanium enclosure

They also report the new motherboards and built-in bluetooth will be featured... with OS X-only support. No time-frame is given, but if these follow Apple's OS X-Only timeline, it would be expected after Jan 2003.