A Crystal White PlayStation Vita model is currently available on Amazon for $200. The color is not technically "new," but that version was previously available only as part of the Assassin's Creed III: Liberation bundle in North America, though it was released as a stand-alone in Japan.
It should be noted that $200 for the Crystal White PS Vita is not the best deal you can find. GameStop is currently selling the Assassin's Creed III: Liberation bundle, which includes the system and a copy of the game for $200.
The Crystal White PS Vita currently available through Amazon is the original model, featuring a 5-inch OLED screen instead of the 5-inch LCD screen included as part of the newer units. It's not clear if Sony plans to make the white PS Vita more widely available in North America.
Earlier this week at the 2014 Consumer Electronics Show, Sony announced new functionality in the pipeline for the PS Vita. Owners will eventually be able to stream games to their systems through Sony's new PlayStation Now service, which will let you rent games individually or as part of a Netflix-like subscription package.