Newly uncovered AT&T update strategy suggests that the carrier will make the unlimited text messaging plan the only option for new subscribers next week. As of August 21, the $10, 1,000-message plan should disappear and leave only the $20 individual and $30 family unlimited plans. Anyone else will have to pay per use, according to Engadget's screen cap, which at 20 cents per SMS and 30 cents per MMS is designed to steer all but very occasional users into a fixed plan.
