yes it's september 15 release for #MotherMovie ! can't wait to share it. just gotta finish mixing and fine tuning.— darren aronofsky (@DarrenAronofsky) July 21, 2017
Also, a few lucky people will get to see the mother! teaser attached to Dunkirk:
Source 1, Source 2
The big question is whether mother! will be included in the Venice Film Festival.