This is why apple is stubborn as an ox. You don't drive a car with a touchscreen steering wheel in real life nor should you in a racing game. Physical controllers should of been implemented since ios 3.0
Apple was extremely wise not to have physical controllers too soon: it would have killed off or greatly set back the new generation of modern touch and tilt games: control methods that are much BETTER than button and mice for many kinds of games. (The reason I game on my iPad and iPhone more than anywhere else--and I'm an avid gamer.) Plus, there would have been fragmentation between those who have the controller and those who don't.
Far fewer developers would have stepped up to the multitouch challenge--and in many cases, excelled--if they didn't have to.
It would have been a problem--for developers, for Apple, and in the end for users who would have missed out on some great touch games! It would have been a short-sighted "bullet-point marketing" move.
It also would have begged comparison with conventional consoles, and that would have been a poor marketing move when iOS was young.
But by waiting for the iOS games market to be as mature as it is, we can now have our cake and eat it too. Both modern touch/tilt games AND classic controller games can thrive. (And even retro/digital controls, thanks to iCade.) So I hope it's true!