Don’t get your hopes up for an iPhone tethering announcement from AT&T anytime soon. The company on Thursday dashed the hopes of many iPhone users and confirmed that the ability to tether their computers to the iPhone for an Internet connection is not coming any time soon, according to TUAW.

“As for tethering, by its nature, this function could exponentially increase traffic on the network, and we need to ensure that some of our current upgrades are in place before we can deliver the expanded functionality with the excellent performance that customers expect,” said AT&T spokesman Brad Mays. “We expect to offer tethering in the future.”

AT&T did say that its MMS service has been scheduled to be activated on September 25. MMS will require a software update for iPhone 3G and iPhone 3GS users that will be released that day.