Going back to the classics.
Today, IGN confirmed with Producer Bryan Singer that the sequel to X-Men: First Class will be Days of Future Past. The classic storyline ran in Uncanny X-Men #141(cover shown above) and #142 in 1981, and focused on a future where mutants were hunted down via the robot killing machines, the Sentinels.
Check out the video from IGN below and hear it right from Singer’s mouth. You can see the full IGN article HERE.
Sure, there will be some changes, but this could end up being THE X-men film to watch.