They’ve got an interview with the director somewhere that goes like
Interviewer:”Will the movie be in 3D?”
Director:”I don’t know…I filmed it in 2D, but that’s all up to post-production what they do with it…”
I:”What rating did you film it for?”
D:”None really, the studio will decide on that later.”
I:”Did you have anything to do with the movie then?”
D:”I changed the character of Lewis to a man!”