2014 release?

Not sure how reliable this is, but from a recent Edgar Ramirez interview on MovieWeb.com:

"Imagine stepping into the shoes of Roberto Durán, one of the most legendary boxers in the history of the sport, and definitely the most legendary Latin American boxer, and then having Raging Bull in my corner. I mean, imagine that? Just having Robert De Niro to play the trainer in the movie, that was fantastic. There are no words to describe the level of privilege to be in the same movie with him, to be on the same set as him, and to be the recipient of the generosity this man has, as an actor and as a person."

Hands of Stone comes to theaters in 2014 and stars Robert De Niro, Jurnee Smollett-Bell, Édgar Ramírez, Ellen Barkin, John Turturro, Usher Raymond, Reg E. Cathey, Drena De Niro. The film is directed by Jonathan Jakubowicz.