WiFi Networking News has a report on users getting faster speeds on Cingular's GPRS network. Speeds that should only be possible on an EDGE network. Currently, AT&T Wireless is the only nationwide EDGE provider.
"Cingular’s CTO told me last year that the company would have EDGE fully deployed by June of this year. Its acquisition of AT&T Wireless, which already has an almost entirely deployed EDGE network, means that Cingular doesn’t need to build out overlapping infrastructure."