Hopscotch announced the actors via Facebook today:
Hopscotch will release ‘The Talking Cure’ directed by Cronenberg, starring Keira Knightly, Michael Fassbender, Christoph Waltz. A beautiful young woman, driven mad by her past. An ambitious doctor on a mission to succeed. An esteemed mentor with a revolutionary cure. Let the mind games begin…'"I am doing cartwheels!! Christoph Waltz and Fassie in the same film again, AND directed by the genius Cronenberg. Joy!!