Unfortunately, there is still no news as to when tethering will be available as there was no mention of it in the press release, so looks like AT&T customers will have to wait even longer for that feature.
As you might know, AT&T was one of the carriers that did not offer MMS and tethering feature to their customers, which was included in iPhone OS 3.0.
AT&T has explained the reason for the delay in rolling out the feature:
We know many of our iPhone customers are eager for an update on our rollout schedule for Multimedia Messaging Service (MMS). We’ve been working for the past several months to prepare our systems and network to ensure the best possible experience with MMS when it launches – and that launch date is: September 25 for iPhone 3G and 3GS customers. MMS will be enabled through a software update on that day.
We know that iPhone users will embrace MMS. The unique capabilities and high usage of the iPhone’s multimedia capabilities required us to work on our network MMS architecture to carry the expected record volumes of MMS traffic and ensure an excellent experience from Day One. We appreciate your patience as we work toward that end.
Note: MMS feature will not be available for iPhone 2G users as due to hardware limitations (according to Apple).
Based on this announcement it looks like the release date of iPhone OS 3.1 will also be September 25.
whopping 350 percent year-on-year increase in mobile broadband usage
since the launch of the iPhone two years back and are working hard to
stay ahead of the anticipated demand.
At present, it looks like they are trying to keep up with the demand rather than stay ahead of it as most of our readers had commented that they are yet to see any improvements when we reported that AT&T had improved 3G mobile broadband coverage in New York & New Jersey.
If you can’t wait for the features to be officially rolled out then checkout our step-by-step guides to enable MMS and tethering on your iPhone running iPhone OS 3.0 or iPhone OS 3.0.1.