If this camera button is any indication, you'll soon be able to send photos (and videos?) with your iPhone, just like all your friends have been doing since 2003. Sweet.
• Confirmed is support for sending and receiving photos, contacts (VCards), and audio files. Looks like video is not included.
• You can record voice notes with the iPhone's mic, edit them on the phone, and then send via MMS.
• Bad news for iPhone EDGE owners though: MMS is one of the features Apple is pruning from the 3.0 release for the first-generation iPhones.