Nikon filed a patent (2012-220827) in Japan for a Nikkor 18-55mm f/3.5-5.6 lens. Egami reports that this lens was designed for a mirrroless APS-C based camera. It will be interesting to see in the next few months if more similar patents will show up online. I seriously doubt that Nikon will introduce a new mirrorless camera system any time soon. I think there is a better chance for something like the Pentax K-01 that will be compatible with all F-mount DX lenses – I cannot see Nikon supporting another mount in addition to the CX and DX/FX.
