bah humbug on teh Q
As for those three models, Lowrider and Hollywood are two; the thrid is probably the International but not US one that has been developed. Guesses are that one is WinMobile in order to compete in the EU and make inroads to Asia.
My guesses (only guesses, when I know stuff I am usually covered by NDA):
Lowrider: take the Z22, add a cellualr radio there is a $200 Treo 600ish device, but I doubt it would have the keyboard. If it does, the keys need to be bigger.
Hollywood: take the T5/TX, make the 650 1/4 less plump, add sliding keypad, and there you have one heck of a device. This would have to run the palmOS to be of best success. WinMob isnt ready for Hollywood lest one takes hollywood to mean DRM protections built in.
Just a guess, dont come at me if I am right or wrong :dry: