t's easy to take for granted the 3G iPhone's launch at this point. After all, Steve said it was "coming later this year," as did a number of prominent mobile executives. And then there's been the barrage of carrier announcements, many in international markets that use UMTS and have zero support for the iPhone as we know it today. But the fact of the matter is we've had very little to go on by way of material evidence -- until now.