I have been trying to find something about this but "2g" is not a helpful search term since that is the new limit. I printed the facebook discussion saying that existing 2g customers that are paying 20.00 for unlimited edge data can upgrade to the 30.00 unlimited 3g when the iPhone 4 is purchased but I cant find it anywhere else. If I have trouble in the store I want to have more than a facebook print as back up. Has anyone been able to find anything official from at&t confirming the upgrade eligibility of original iPhone owners? I have been trying for a while now and no luck. I called customer care and they didn't know the answer, they just went with no to be safe. Please help, a link to something official, has anyone found one?