I received some information that the next 7Artisans lens for Leica M-mount will be wide angle. My personal guess is 24mm or 28mm. Currently 7Artisans has two lenses (35mm f/2 and a 50mm f/1.1) with rangefinder coupling:
7Artisans 35mm f/2 lens review (comparison with the Leica Summicron-M 35mm f/2 ASPH)