BlackBerry Niagara Available In USA Market Estimated in May?

BlackBerry has prepared a new smatphone will enter in the marketĀ upcoming May. BlackBerry Niagara is not yet clear when the exact date launch and price estimated. Accoridng wit a source Niagara will soon be marketed by Verizon Wireless service in two months.
BlackBerry Niagara is estimated based smartphone Research In Motion that success BlackBerry Curve. Niagara will be greater than the Curve but less than BlackBerry Bold. But the same screen with Bold is 480 x 320.
Niagara is also will run 624MHz processor and using BlackBerry OS 4.6.
This phone has a full QWERTY keyboard, EV-DO Rev A, GPS, 3.2 megapixel camera and support SSX 5.0.