While everyone's attention has been focused on The Avengers and the upcoming Amazing Spider-Man and The Dark Knight Rises, Fox has been quietly gearing up for the sequel to 2011's X-Men: First Class, which begins production in January for release in July 2014. We've known for a while that director Matthew Vaughn and most of the cast will return for a movie that screenwriter Simon Kinberg has said will focus heavily Magneto, but beyond that there have been only rumblings that story could move forward into the late 1960s or even 1970s.
However, if Ain't It Cool's source is to be believed, the follow-up could skip over the the '70s entirely, into the dystopian alternative future depicted in the popular Marvel comics storyline "Days of Future Past."
According to the website, Fox recently filed the name with the MPAA's Title Registration Bureau, which "exists for studios and productions companies to stake their claims on certain titles that they intend to release and distribute, so that others can stray from using a similar title."
The 1981 story by Chris Claremont and John Byrne, which appeared in The Uncanny X-Men #141-142, depicts a timeline created by the X-Men's failure to prevent the Brotherhood of Evil Mutants from assassinating a U.S. senator. In that alternate future, the giant robotic Sentinels have become the de facto rulers of the United States, where mutants are hunted down and placed in internment camps. It seems likely the X-Men: First Class sequel -- if it's indeed based on "Days of Future Past" -- would deviate significantly from the source material, as several characters who played key roles in the original story were not part of the 2011 film.
The sequel to X-Men: First Class opens July 18, 2014.