CES 2014: Nikon has announced it is working on the D4S which, like the D4, it describes as an ‘HD-SLR.’ Details are extremely slight, with the company promising a new image-processing engine and improved autofocus performance. All further details, including price and announcement and availability dates will follow later. The camera will be on display at the CES trade show, so we’ll try to get some pictures of it, as soon as we can.
News: Digital Photography Review (dpreview.com)