This is the Nikon 1 SB-N5 Speedlight Flash (front and rear product views):
It was introduced together with two new Nikon 1 system cameras, the Nikon V1 and Nikon J1.
Below is a photo showing the Nikon SB-N5 mounted on the Nikon V1 camera.
Resources
Official Nikon SB-N5 product page at Nikon USA.
Related
Nikon Speedlight / Flashes / Lighting Tips — Main page.