iPhone 5, iPad 2 model numbers found lurking in iOS 4.3
Apple knows by now developers love nothing more than to deep dive things like the just released iOS 4.3 beta looking for hints of next-generation iPhone 5 and iPad 2 models -- and guess what? Found them!
GSM iPhone 4 is iPhone 3,1 and Verizon iPhone 4 is iPhone 3,2 -- so what then is iPhone 3,3? (Let the T-Mobile or Sprint rumors start!). There's also iPhone 4,1 and 4,2 which should be the iPhone 5 in GSM and Verizon flavors, and the jump in model numbers indicates there'll be some improvements to the chipsets at the very least (iPhone 2G to iPhone 3G wasn't considered a full version jump by Apple, but iPhone 3GS was).
There's also iPad 2,1, 2,2, and 2,3 which should include Wi-Fi, GSM, and Verizon models as well.