Update: the Sigma Quattro DP2 camera is now officially announced. Check pricing and availability at B&H.
A strange/unusual looking Sigma camera leaked today on a Russian forum. There are no specifications available at that point, but the new model should be called Sigma Quattro DP2 and will have a new imaging processor called TRUE III. An optical viewfinder for the camera will also be available. Additional images after the break:
Via club.foto.ru