Cosina's CEO Mr. Kobayashi has just unveiled his new 50/1.1 Super Fast Knock Your Socks Off Nokton for the 10th Anniversary of  his 1999 Voigtlander Bessa system as well as for the 50th Anniversary of Cosina!

Specs:
Styling similar to the 35/1.2 Nokton
 f/1 to f/16 with half stop click stops
7 Elements in 6 Groups
10 aperture blades
Close focus to 1 meter
Filter size 58mm
Black only
M mount
Standard or optional larger LH-7 lens hood
Size 57.2mm length x 69.6mm diameter
Weight 428 grams or 15.1 ounces

via cameraquest.com