AppleInsider reports that the iBook will see major changes "in time" for the holiday season.
Updated iBooks are rumored to support the expected upgrades: Bluetooth and USB 2.0 which would bring the iBooks in line with the remainder of Apple's lineup. Other features noted include brighter displays, and improved graphics.
Most interesting are hints from AppleInsider of a completely new form-factor for the new iBooks, though details are scarce.
As previously reported, the most likely candidate for the upcoming iBook processor is the IBM 750GX, which features a top speed of 1.1GHz and 1MB of L2 Cache and is targetted for production in December 2003.