According to Bloomberg Nikon Corp. plans to introduce a new type of single-lens reflex camera as early as this fiscal year, President Makoto Kimura said.
The “new concept” model will probably have an enhanced function for video recording and may adopt the so-called mirrorless structure, Kimura said in an interview today in Tokyo. “It could be any time this fiscal year or the following year, as new models are starting to sell,” he said, declining to specify when the product will be available.

I just found a new Sony NEX-7 rendering. This is not the real camera but a product of imagination ;)

UPDATE: The author of the rendering is Qing Xiang (http://timberwolf.zenfolio.com)

Reminder->There eas a rumor a while go that said that the NEX-7 would be announced at Photokina and:

“Design totally different to NEX5/3, and more bigger size
Spec unknow yet
Support XDCAM recording format
soonest release is on Sept, unless Panasonic announce GH2“

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 ;)