I've been around since the first iphone release and apple has never announced a specific case for the 2G, 3G or 3GS. But now with the new iPhone 4 they release a bumper, not really a case. And notice the bumper only surrounds the metal band and thats about the only protection you get? They probably knew about the signal loss during late stages of mass production I'm guessing. This is just interesting to me and speculation. If this has been posted before, I apologize.