Leica recently released a body specifically dedicated to Black and White photography. From the press release: “For the first time ever, we are offering an opportunity to consistently and authentically explore black-and-white photography with the M Monochrom, a tool that is unique in the digital world. The camera’s exclusively black-and-white sensor brings an enormous technical benefit that is reflected in the amazing imaging quality it delivers.” Read a good review here.
Interesting concept art by David Riesenberg. Based off the classic AE line of 35mm film cameras, the "AE-D" concept has a full-frame digital 18.1 MP sensor, detachable electronic viewfinder, and a built in flash that cleverly pops up out of the 'film rewind knob.' Definitely check out the rest of the renderings at his website.