CrunchGear has a spread on what appears to be the new 3G iPhone. Matt Hickey wrote in CrunchGear:
It's thinner than the current model, for sure, with a more MacBook Air-like bezeling. It's got stereo speakers on the back and what appears to be the same screen as the current generation. But the real news here isn't the Exchange support, but the front facing camera for iChat AV.