Apple Computer Inc is expected to add four more notebook computers to its line as the PowerBook Duo family in October, according to the Wall Street Journal, which hears that two Duos weigh just 4 lbs and will slot into a desktop docking station to create a desktop Mac; they are expected to cost under $3,000. Two other models will replace the high-end models at about the same price but with faster processors and much sharper displays.
