http://consumerist.com/2009/01/25/rumor-confirmed-att-has-indeed/

Rumor confirmed: AT&T has indeed dropped the price of its unlimited data and messaging plan by $5—the new cost is $30/mo, and $10/mo to add a second phone under their shared family plan. Unless you plan on texting more than 200 messages a month, however, it’s not worth it (you can get unlimited data + 200 messages for $20). [Engadget Mobile]