AT&T Migrating 3G Network to 7.2 Mbps, Planning for 21 Mbps Later This Year? - Mac Rumors

AT&T Migrating 3G Network to 7.2 Mbps, Planning for 21 Mbps Later This Year? - Mac Rumors: "Telephony Online reports that AT&T is in the process of upgrading its 3G wireless network from the current 3.6 Mbps download standard to 7.2 Mbps. Several recent rumors have suggested that the next-generation iPhone due this summer will be able to take advantage of the higher speeds."