*follow link* http://www.newsarama.com/28110-r-rated-batman-v-superman-dawn-of-justice-confirmed.html
So Warner Brothers gave the green light for an R rated Batman v. Superman. Zack and the team seem to like the idea. So although the theatrical version will have a PG-13 rating, when you buy the movie, it'll come with an extended R rated movie. Which would also be longer than the theatrical release.
In other news, The Batman: The Killing Joke animated movie also has the green light for an R rated film. WB studios is really pushing the writers and directors for creativity. And although they have the go for an R animated movie, this doesn't mean that directors and writers need to make an R rated film, but to add depth in their storytelling. Some studio producers lack the privilege in giving their writers and directors creative freedom. And I think this is what will make the ultimate difference in the new age of Hero movies. Because the success of Deadpool's hard R movie, studios are becoming more open to the idea and realize that people will see a rated R hero movie so long as they treat the character with the justice it deserves. Even the 3rd Wolverine movie has now been highly considered by FOX to be an R rated film.