AT&T -- MMS Later. Tethering... Um... Er... Bai!
Although humorous for the crowd attending the WWDC Keynote today, when Apple VP of iPhone Software, Scott Forestall, announced MMS and Tethering, AT&T being deferred until later this summer on the first count, and totally glossed over on the second count, likely won't be as amusing for US iPhone 3G and iPhone 3G S owners who will miss out on fairly standard functionality other carriers and regions may get on 3.0 launch come June 17.
To learn more about iPhone tethering, visit Apple's iPhone feature page. To learn more about AT&T's support for these features--