how about hanging on for this?
http://dvice.com/archives/2010/03/sprint-htc-evo.php#more
it's even a portable hotspot and has an awesome 16gb on-board, impressive for a phone. 4G is going to be awesome since we're going to be waiting a while for WiMAX to really get the backing it needs, 4G is looking to be the future for wireless inter-operability...until the next standard comes along :-)
(I know you wanted a dumbphone, but really? how cool is this phone lol)