The following includes questions and answers at the Conference for the Medium Term Management Plan on June 18, 2010 (Source: Nikon.com). The most interesting part is here:
Q: What can you tell us about the new-generation digital cameras?
A: Although we considered a variety of so-called mirrorless interchangeable lens cameras for the digital SLR camera market, we discern the appropriate timing for the launch of our new-generation digital cameras based on the direction of the market demand.
Come on Nikon, you can do it ;)