Mitakon will soon announce a new 135mm f/1.4 lens that will be available for Sony FE, Canon (pictures above) and most likely Nikon mounts. Stay tuned for additional details.
Update: the this lens will weight around 3kg (6.6lbs):
Here are few sample photos taken with a prototype (larger versions available on flickr):
Here is the current lineup of Mitakon Speedmaster lenses:
