Cingular has two GAIT or GSM/TDMA phones they still support today for new users... There is the Sony Ericsson one mentions and the Nokia device.
The TDMA and Analog portion of these devices have another 2 years to live before you will see MAJOR de-emphasis of supporting these dead end technologies. Rural network operators are supporting both GSM and CDMA overlays to their current networks. This is happening faster than you tbink.
E.g. look at Cingular's proposed coverage areas (e.g. Montana, North Dakota, etc), these are with rural operators providing roaming:
http://onlinestore.cingular.com/weba...st_7_31_03.htm
You will see further rural market coverage over the next few years as well...