Following the final full-length trailer released last night for X-Men: Days of Future Past, we have two new behind-the-scenes featurettes and an alternate trailer. The featurettes showcase two scenes in director Bryan Singer's sequel, one where Magneto (Michael Fassbender) breaks back into prison to retrieve his helmet, and another at a Paris airport in 1973, where all of the extras had to be dressed in period attire. If that wasn't enough, we also have an alternate trailer with brief glimpses of new footage featuring Magneto, Quicksilver (Evan Peters) and Beast (Nicholas Hoult).