James Cameron is delaying production on his upcoming Avatar sequels, which means the next installment won't hit theaters until Christmas 2017. (That's a year later than expected.) Rumors of a delay had been swirling for months, as the filmmaker had yet to submit a shooting script to Fox. Not surprisingly, part of the problem was that Cameron had planned to shoot Avatars 2, 3 and 4 back-to-back-to-back. "There's a layer of complexity in getting the story to work as a saga across three films that you don't get when you're making a standalone film," Cameron told the Associated Press this week.