Twentieth Century Fox has announced the release dates for three upcoming Marvel films, including a mystery project set for summer 2018.

While filming on the first “Fantastic Four” has yet to begin, the studio will release “Fantastic Four 2” on July 14, 2017, while another “Wolverine” installment will bow March 3, 2017.

The untitled Marvel project, set for July 13, 2018, could be another “X-Men” feature or another “Fantastic Four” pic, as Fox owns the rights to both properties.

“X-Men: Days of Future Past,” co-starring Wolverine himself, Hugh Jackman, and Michael Fassbender, opens May 23.

The X-Men universe, in addition to James Cameron’s upcoming “Avatar” sequels, remains a top priority for Fox. Including the “Wolverine” standalone films, the X-Men franchise has generated over $2 billion worldwide at the box office. With upcoming action from the Avengers, Star Wars and DC’s Justice League, Fox clearly wanted to get out front on the 2017 tentpole calendar.

The studio’s first “Fantastic Four” film, starring Michael B. Jordan, Kate Mara, Jamie Bell and Miles Teller, opens June 19, 2015.

Additional release dates announced: “Taken 3” will open March 4, 2016; Daniel Radcliffe’s “Frankenstein” is moving from Jan. 16, 2015, to Oct. 2, 2015 and Matthew Vaughn’s “The Secret Service” has been bumped up to Oct. 24, 2014.