A tweet sent by the star of the Netflix series Jessica Jones seemed to indicate that he was going to be in X-Men: Dark Phoenix, the next film in the X-Men franchise. He recently clarified to say that he is only excited for the movie, not that he will be in it.
Maybe at some point he might find himself in an X-Men film (maybe playing Sabertooth, perhaps?); but for now he, like us, will be content to see the film when it comes out.
Filming is supposed to begin later in 2018. The film stars Sophie Turner as Jean Grey and the title character.