The MMS delay is kind of unfathomable, as multimedia messaging ought by rights to be a cash cow; the tethering thing is something that users have wanted for years — and which has been possible with jailbroken iPhones pretty much from the beginning — and so the delay on that is particularly galling. I'm willing to bet that AT&T's foot-dragging here is largely due to their creaking network. They probably need to do some last-minute jiggering to get MMS to work properly without overwhelming the works with endless 300 KB pics of cute kitties or whatever. When it comes to tethering, well, I have bad news for you: it's going to cost you. I know linear geek logic says "I have unlimited Internet access through the phone now, therefore I should be able to use that unlimited access how I choose"; but it's only possible for AT&T to offer you that unlimited access on its current network because it knows you won't use it the way you would if, say, you had a computer with unlimited access. Charging for tethering serves multiple purposes: it makes them money which they can (if they're smart) reinvest in their network, and it cuts down on the number of people using said network, until that network is spruced up. The real thing to whine about here is that it isn't ready now; surely Apple let AT&T know well in advance that tethering was coming, and it would have been smart to have pricing plans good to go on June 19th.