http://www.apple.com/retail/iphone/
Hmmm...Update:**New two-year contract required. Qualified customers only; credit check required; must be 18 or older. Visit www.wireless.att.com to check AT&T network coverage in your area. Current and new iPhone users who now or will receive service under a corporate account and wish to upgrade to or purchase iPhone 3G need to contact AT&T directly. iPhone 3G is configured to work only with the wireless services provided by AT&T.
Looks like qualified customers only and those who are new customers to ATT
Hmmm...Update:**New two-year contract required. Qualified customers only; credit check required; must be 18 or older. Visit www.wireless.att.com to check AT&T network coverage in your area. Current and new iPhone users who now or will receive service under a corporate account and wish to upgrade to or purchase iPhone 3G need to contact AT&T directly. iPhone 3G is configured to work only with the wireless services provided by AT&T.
Looks like qualified customers only and those who are new customers to ATT