Just found this update on Boy Genius Report...
BlackBerry Javelin and BlackBerry Niagara explained!
So, GSM/EDGE version for
▪T▪ ▪ ▪Mobile▪ and
the new at&t, and an EV-DO version for
Verizon Wireless, with
Verizon's coming to a store near you in May, 2009! You heard it here first (unless you read it on BGR before seeing this thread!

)