Michael Reichmann, from Luminous-Landscape, took the DP2M for a spin and he has a couple of positive things to say about the new camera. Of course, the camera has its flaws too. An average consumer might not find the new Sigma appealing but for those hardcore photographers that can overcome the limitations of the camera, for example auto-focus speed, they can happily use this as their main gun.
Click on the source link to read the whole review of the camera. Warning though, he can be harsh so prepare yourself.