... R for "sci-fi violence including intense images, and brief language."
Beaks here with the final word on The Great PROMETHEUS Rating Kerfuffle. Turns out those fears of 20th Century Fox releasing a PG-13 ALIEN-ish movie from Ridley Scott were unfounded. They got an R from the MPAA, and are fully backing Scott's vision. Everybody wins!
So there you go: The R-rated PROMETHEUS opens theatrically on June 8th, 2012.