The second production run is in process and should ship about May 10.
Regarding the lens release, it will appear as in the picture on the right; it's an Allen screw. Pushing downward on the screw head (i.e., towards the camera's lens release button) will release the Contax lens, so it can be rotated in the mount and removed.
Regarding the lens release, it will appear as in the picture on the right; it's an Allen screw. Pushing downward on the screw head (i.e., towards the camera's lens release button) will release the Contax lens, so it can be rotated in the mount and removed.