Director Bryan Singer continues to use Instagram to ramp up fan fervor for "X-Men: Days of Future Past," releasing a new video teaser via the social network. As is typical for this sort of trailer, it's light on story details, but does offer some new, clear shots of the movie's cast, including Wolverine, Colossus, Warpath and more.

The clip is just the latest in Fox's promotional push for the summer release; the studio and director have been steadily offering fresh glimpses of the time-traveling epic for months. Last week, Fox launched a website for the anticipated sequel, including new photos of the various mutant characters set to return and debut in the film.

Opening May 23, the film stars Hugh Jackman, James McAvoy, Michael Fassbender, Jennifer Lawrence, Halle Berry, Nicholas Hoult, Ellen Page, Peter Dinklage, Shawn Ashmore, Omar Sy, Evan Peters, Daniel Cudmore, Bingbing Fan, Adan Canto, Booboo Stewart, Ian McKellen and Patrick Stewart.