Check out this new Leica M camera underwater housing from Subal. The price is €5,500. No technical information is available at that point. From their Facebook page:
SUBAL at the 47th BOOT Show in Dusseldorf announces proudly the new system of the LEICA M housing. This housing allows you to use Leica lenses, Voigtländer lenses and many others with Leica M bayonett with the Subal port system. Also the great thing is that it is usable with Nikonos lenes without any ports. So you can use underwater corrected lenses in their full quality.
Technical specs:
Additional pictures:
See previous posts on underwater housings for Leica cameras:
Yes, there was a underwater housing for the Leica Digilux 2 camera
Nauticam announced NA-LX5 underwater housing compatible with Leica D-Lux 5 camera