The upcoming Sigma DP3 Quattro image published by Sigma itself by having a coming soon tag on their website, the camera is expected to arrive on camera and photo imaging show 2015 at Japan, that starts from Feb 12 and ends on Feb 15.
The Sigma DP1 features 19mm f/2.8 lens, DP2 equipped with a 30mm f/2.8 lens, the dp3 will have a 50mm f/2.8 lens as we can see in the image also. All these three camera will share same 29MP Foveon X3 Quattro CMOS Image Sensor.
See Sigma dp2 Quattro Digital Camera at B&H and Amazon
