The mobile phone blog BGR has an exclusive of what it says is a test model of a T-Mobile iPhone. Does this mean that Big Purple (aka RC Cola) will be carrying the iPhone soon? Doubt it. If you're Apple you test this thing on every platform up to and including Maxwell Smart's shoe. But that doesn't mean it won't happen eventually. There was plenty of documentation for years of Apple Verizon testing and that came true.
In other rumors, El Cinco might look a lot like an iPod Touch. The blog "This is my next", which is a silly name, did a mock up based on the information they've been hearing. El Cinco will have a flat body, a bigger screen due to a narrower bezel, and an oval start button.