With the still-growing success of the superhero movie genre, the film licenses to key Marvel Comics properties are more valuable than ever. Twentieth Century Fox sees that and while they gave up on Daredevil – with the rights reverting back to Disney-owned Marvel Studios – they held tight onto the Fantastic Four and their flagship comic book series, the X-Men.

It’s because of that fact that Fox is taking major strides in bringing their mutant characters back to the forefront of upcoming blockbusters over the next few years and much of the series feature depends on X-Men: Days of Future Past, their second most expensive film production ever (behind only Avatar), and the most expensive comic book adaptation of all-time.

It’s not just money the studio is throwing at Days of Future Past however, a film that brings back the stars of X-Men: First Class and merges their next adventure via time-travel with the familiar faces of the original X-Men trilogy. Fox is bringing in big names in the industry to make sure that they’re tapping into the vast library of characters and stories they own. Marvel Comics legend Mark Millar was hired as a consultant for their films going forward and A-list screenwriter Simon Kinberg signed a 3-year deal to help develop larger story arcs that span multiple films. With James Mangold working away on another Wolverine movie, Josh Trank (Chronicle) beginning to cast his reboot of the Fantastic Four and Bryan Singer back at the helm for potentially the next two X-Men team-up event movies, the studio is taking the series more serious than ever. But it all begins with X-Men: Days of Future Past.

We saw the Days of Future Past comic-con footage, presented on stage last summer by practically every superstar in the film’s cast, and that footage released as the film’s first full-length teaser trailer in October. We’ve yet to see much action in the film, let alone the giant robot Sentinels the X-Men will be battling in the past and “present,” but more is coming very soon. Fox promises some major reveals next week coming via Empire and offered this brief Instagram tease to hold us over:

Lots of love for the leads with clear shots of Michael Fassbender’s young Magneto (with a different helmet design!), James McAvoy’s young Professor Charles Xavier, and Jennifer Lawrence’s young Mystique. We also see Wolverine drowning, old Magneto and bearded Iceman (same shot from the trailer) and an interesting scene of Evan Peters’ Quicksilver breaking glass.

Another key sequence is the new mutant characters of Warpath, Sunspot and Blink standing back-to-back underground in the future. This shot likely ties into the Moscow Sentinel attack we learned about through a not-really-spoilery script leak recently. Excited for more?

More: Why Does Wolverine Time-Travel?

Bryan Singer directs X-Men: Days of Future Past with newcomers Peter Dinklage, Omar Sy, Boo Boo Stewart, Fan Bingbing, Evan Peters, Adan Canto, Josh Helman, Evan Jonigkeit along with returning stars Jennifer Lawrence, Michael Fassbender, James McAvoy, Nicholas Hoult, Patrick Stewart, Ian McKellen, Hugh Jackman, Anna Paquin, Ellen Page, Shawn Ashmore, Halle Berry, Lucas Till, and Daniel Cudmore.

X-Men: Days of Future Past hits theaters May 23, 2014. Fantastic Four opens June 19, 2015X-Men: Apocalypse releases May 27, 2016 release.

Follow Rob on Twitter @rob_keyes for your Marvel movie & TV news!