Um… so yea. New plans… nothing new for the actual "data connect" plans though. Seems this only affects the "MEdia" plans. Hit the link below for the PDF which outlines it all.

Here are some key selling points from this document:

• Cingular is now offering UNLIMITED MESSAGING in two new packages – so customers can send/receive as many Text, Picture, Video & Instant Messages as they want with anyone in the U.S without worrying about overage charges!
• Customers can enjoy up to 50% more text, picture and video messages at the same great price on several plans!
• Simplified billing on MEdia Max Unlimited and Messaging Unlimited plans
  More competitive in the marketplace—better customer value allows sales reps to overcome customer objections.
• Increase demand for Messaging Packages & MEdia Bundles, thus increasing the opportunity to sell data features!

Link to at&t’s new data plans : The Boy Genius Report