Sigma announced SD15 as a successor of
SD14 in
Photokina 2008. The SD15 is a 14 megapixel (2,652x1,768x3 layers) digital SLR camera with the "TRUE II" new image processing engine, which is the newer version of the "TRUE" engine incorporated in
DP1, Sigma's compact digital camera.
I'm a user of SD14 and like its color reproducibility. Foveon X3 sensor which consist of three layers of censors is great in this point. The SD15 has this sensor and the "TRUE II" engine. So I'm looking forward to this camera.

Sigma SD15