Engadget is reporting that AT&T is going to offer a tethering plan, they just haven't worked out the details. Plus, we have a whole week until the iPhones go on sale, what's the big rush? They just haven't figured out how much extra they can get out of you suckers customers.
BGR says there will be a $70/month unlimited data w/tethering plan (so +$40 for Tethering) Also, AT&T will offer an unlimited MMS solution for $20/month. Ouch.