Earlier today Starwars.com dropped a featurette for Rogue One where the rating for the film was revealed. Jeremy Conrad pointed this out earlier today. This is of course no surprise as all; it would have been a shock if Rogue One was rated PG. The Force Awakens and Revenge of the Sith are the only other two Star Wars films rated PG-13.
Rogue One: A Star Wars Story is rated PG-13 for extended sequences of sci-fi violence and action. Rogue One hits theaters in 28 days.