Sigma just announced the soon-to-be released DP0 Quattro camera. For those who may be unfamiliar, Sigma uses a three-layer sensor in their cameras, capturing the full image in each of the red, green and blue channels. There are some advantages to this and also some disadvantages.
One bid disadvantage is that you must use Sigma's incredibly slow software, which will bring your workflow to a crawl. Also, the sensors are not that great at high-ISO.
Anyway, the DP0 is a fixed-lens camera. The lens, which I'm sure is excellent, is 14mm (21mm equivalent). It has a maximum aperture of f4, which is surprising and not particularly impressive.
Sigma claims that the Quattro sensor has 39-megapixel equivalent resolution. That may be a slight exaggeration, but it is a high resolution camera.
It's not known when the camera will be released or how much it will cost. If I were to guess, I'd say June and $999.
If you are looking for something a little different that will produce excellent image quality while not breaking the bank, this might be the camera for you.