It seems that the release of a 3G iPhone is just around the corner (rumored second quarter) but wanted to know about the existing network. AT&T has indicated it has expanded its 3G network but I am left with the impression that coverage is still not nearly as widespread as Edge. So here's the question: Is it possible that new 3G phones will work on Edge AS WELL? Or is it one or the other? I'm thinking I'd rather have a slower network all of the time than a fast one only some of the time.