Nikon 1 J2 camera is expected to announced by Nikon in Mid-August. Along with the J2 are some new mirrorless accessories, including an underwater housing.
Nikon J2 is the successor of Nikon J1, which is the first Nikon mirrorless camera.
About specs of Nikon 1 J2:
There are no rumors about Nikon J2 specs yet. You may take a look at newly released Canon EOS M.