I have Curve on At&T service however my friend will not switch carriers and is using Verizon. Does anyone know if Verizon will be introducing a Curve model anytime soon?

Check the rumor mill, they just announced today some spy shots of the unreleased (and no timetable either) CDMA curve that's in testing. Your friend probably will have to wait in april/may/june time frame.

Hope that helps

there are 3 threads on this very topic going on as we speak.