Mr Joswiak refused to be drawn on when the next generation of notebooks, using the PowerPC G5 processor, would be released.
The Power Mac G5 desktop was launched in June 2003. But Apple engineers are working on reducing the heat generated by the chip before it can be incorporated into notebooks.
"In the very long run, the G5 is part of our long term processor roadmap, but it will be some time before that processor will be in a notebook," said Mr Joswiak.
He declined to be pinned down to a date for G5 portables, but pointed out that it had taken at least two years for the G4 chip to make it from the desktop to the notebook.
sigh