A new trailer has been released for the upcoming movie X-Men: Days Of Future Past. It looks as if this film is going to tackle the concept of time travel, as characters will have to go back in time to change event in the past to save the future. Many of X-Men's trademark characters will appear in this film along with the introduction of new people, such as Bishop, who is a favorite among X-Men fans. Expect this film to release on May 23rd of 2014. Watch this trailer above.