Apple's done a decent job of implementing features that we've all been clamoring for into its forthcoming OS 3.0, and aside from copy and paste, there's probably no one single feature add bigger than this. You heard right -- multimedia messaging (MMS) is at long last coming to the iPhone 3G (sorry, first-gen iPhone owners) after years of dealing strictly with SMS. During the keynote, Apple was pretty remarkably short with details, simply noting that MMS "support" would be added. Frankly, we don't expect anything mind-blowing; it'll probably look a lot like the current SMS setup, and it'll definitely make AT&T happy when you start firing away picture messages without first subscribing to an unlimited messaging plan.
Update: Apple's official PR on the subject has given us just a bit more to chew on. We're told that MMS will enable iPhone 3G users to "send and receive photos, contacts, audio files and locations with the Messages app," hinting that Apple may just smash MMS and SMS together into a single 'Messages' app in OS 3.0. Also of note, owners will also be able to "forward and delete multiple messages."