According to Apple Insider, IBM has at long last produced a potential G5 chip for the PowerBook series. Unfortunately, it appears that Apple may not avail themselves of the new product, as it contradicts their stated Intel transition strategy. Too bad- I could aways use a more powerful PowerBook, though my recently purchased 1.42 GHz Mac Mini is still a delight.
NOTE: One word of advice to potential Mac Mini buyers: If you plan to install 10.3 Server, be aware you will need a machine running 10.3 in order to successfully install it. If you have 10.3.9 or above, you should be OK.