Believe it or not, but iPhone 5 prototype has been sent to carriers for testing ahead of the official launch in September or October. Some sources had earlier claimed of the existence of iPhone 5 with carriers in US. iPhone 5 prototype reportedly arrived to the carriers with serious instructions. If the box is found opened before the lab testing, you would be fired immediately. Truth to be told, if Apple has actually sent them to the carriers, the upcoming hardware would be embedded in a prototype model. This prototype model could be an iPhone 4 or an iPhone 3GS replica.
Also, Guardian sources suggested the same statement. Do you remember Gizmodo Leak? Gray Powell, an Apple engineer who left an iPhone 4 prototype at a Bar which was later purchased by Gizmodo sources at a high cost. Even that prototype was enclosed in an iPhone 3GS like case. So, it would be fair enough to say here even if iPhone 5 would have been reached carriers labs for beta testing, Apple should have taken care of all the possibilities of leaks from the employees.
What do you think about it?