Nikon's long-rumored mirrorless interchangeable lens camera could show at the company's planned August 24 unveilings. New, confident slips suggest the camera, codenamed X810, could be the only news for the late August event. If right, Nikon Rumors' contacts would have it ship with four lenses optimized for the smaller mount system, one of which would be a pancake for close and wide shots and another a superzoom as a catch-all for general purpose shooting.