However, the cliffhanger ending of the last film hints that he could appear in a future spin - off film such as Gambit, starring Channing Tatum as the mutant, or Deadpool, rumoured to star Ryan Reynolds. (independent.ie)
In the climactic end of the last film, Evelyn (Watts), leader of the Factionless, killed Jeanine (Winslet), leader of the Erudite faction. (mercurynews.com)
This is the first entry in the series that feels like it's an entry in a series; there's even a bit that explicitly calls back to the ending of the last film. (birthmoviesdeath.com)