Media event set for September 9, launch likely ~10 days later.
AT&T Announces iPhone MMS Launch for 'Late Morning' Pacific Time Friday
MMS Update: We know you've been eager for this service so we wanted to offer a quick update on the launch plans for MMS on Friday, Sept. 25. Late morning, Pacific Time, on Friday, the new carrier settings update enabling MMS should be live and ready to download through iTunes. We'll provide the steps and all of the details you need right here at that time.A rumor from earlier today had claimed that AT&T would begin rolling out MMS for the iPhone around 10:00 AM Eastern Time on Friday and that the company was rushing to complete infrastructure improvements to support the expected crush of data upon initial activation from users testing out the service.