I believe that Apple will have a problem getting very satisfied IPhone 4 customers to switch to a new IPhone 5. If IOS 5 works on the IPhone 4, then what will it take to get people to drop their IP4 for a new phone? It would have to be something REALLY good. I can't think of any one thing that would make me switch. There will always be some people who want the latest, no matter how much it costs. Would moving from a 5MP camera to an 8MP make me switch? NO. Would having a 3.7 inch screen make me switch? NO. Would having the capability for both CDMA and GSM make me switch? NO. Would a dual processor make me switch? NO. Would having all of these and a generous early upgrade offer from my carrier make me switch? Maybe.