It’s official, MMS is coming to the iPhone 3G and 3GS on September 25th, according to AT&T. For those keeping track, that pushes the promise of “late summer” back to “early fall” since technically, summer ends on September 22nd. On the surface, it seems like not such a big deal, but it is just another straw that is being added to the camel’s back as it pertains to AT&T. Many suspected that MMS would go live on September 9th, alongside the Apple iPod event scheduled for that day. Hey, better late than never, right?