After approximately six months of FCC scrutiny, the Apple iPhone has gained FCC approval. This pending approval was the only known obstacle still standing in the way of Apple and AT&T putting iPhones on store shelves.
The approval may have squased any hopes of software upgradeable 3G capabilities in the first iPhone (which most recognized to be a long shot anyway) as the FCC approval is for the slower GSM data network, EDGE.
There have also been some indications that you might start seeing the occasional iPhone on the street. Various reports have suggested that AT&T has cleared the way for it's employees to begin testing the phones outside AT&T offices.Should you see one, try to keep your hands to yourself.