Paramount Pictures have agreed to add a message to marketing materials for Darren Aronofsky's Noah. At least, Paramount Pictures in the US. I doubt very much this will be considered necessary in most of the rest of the world.
Because the film is a somewhat expanded version of the Bible story of Noah, there's been a process of expansion and adaptation necessary to bring the narrative up to feature film shape. Though I haven't seen the film, I do know the bible story and I know it would be incredibly linear, probably plodding and rather slight if realised absolutely literally on screen. And nobody would really say anything. And it would skip about a bit.
Here's the disclaimer, as per Yahoo:
The film is inspired by the story of Noah. While artistic license has been taken, we believe that this film is true to the essence, values, and integrity of a story that is a cornerstone of faith for millions of people worldwide. The biblical story of Noah can be found in the book of Genesis.
The typical "True Story" disclaimer usually runs to "Inspired By A True Story," sometimes adding something about characters or events being dramatised.
Paramount know they want Bible groups to come and pay to see this movie, not boycott it. What sort of impact would a boycott by devotees of, say, William Wallace have had on the box office Braveheart?