According to an article on informationweek, an AT&T spokesperson has said that support for MMS and a tethering plan will be coming soon and these features will not be available on launch of the iPhone 3G S due to AT&T being in the middle of conducting “system upgrades.”
Although there is word on iPhone 3G S pricing which goes like this…new and qualifying customers the price is 16GB $199 and 32GB $299 however if you are not eligible for an upgrade, early upgrade prices are 16GB $399 and 32GB $499 while no commitment prices are 16GB $599 and 32GB $699.
And at those prices there maybe some annoyance as I have been hearing from a few friends in the states that these prices are too high just to upgrade, so we’ll be keeping an eye out on that one.