Rumours circulating on the Web say Steve Jobs, Apple’s CEO, will announce the "Pismo" PowerBook at Macworld Expo, Tokyo.

Commentators also suggest that Jobs will reveal a souped-up iBook, with FireWire support, and a revamped Power Macintosh G4 line.

The announcements are expected to be made during Jobs’ keynote speech, which will take place at 2am GMT. Apple’s streaming media partner, Akamai, has beefed-up its servers in the Far East to cope with the expected demand for the live Web cast of the speech.