I signed up with AT&T a couple months ago, knowing that they were being bought out by Cingular. I got a better deal than Cingular was offering. As I understand it, no AT&T contracts will change - your terms and conditions, rates, minutes, etc. will remain the same. AT&T has had free roaming on Cingular for some time (not sure if Cingular customers could roam on AT&T free). My phone shows the name of the carrier that owns the tower it is connected to - bounces between AT&T and Cingular all the time. At some point I would assume all names will be converted to Cingular, billing, etc. The odd thing is that the phone I received did not have an AT&T or Cingular logo painted on it - just the basic Motorola. They must not have been customizing phones expecting the transition.