X-Men: Days of Future Past has its Professor Xavier and Magneto as director Bryan Singer has confirmed the involvement of Patrick Stewart and Ian McKellen.
Singer let the news be known on Twitter and also confirmed the return of James McAvoy, Michael Fassbender, Jennifer Lawrence and Nicholas Hoult.
I'd like to officially welcome back James McAvoy, Jennifer Lawrence, Michael Fassbender, & Nicholas Hoult to
@XMEN for @DaysOfFuturePast
Thrilled to announce
@ianmckellen118 & @SirPatStew are joining the cast of @XMEN @DaysOfFuturePast #magneto #professorX More to come...
Bryan Singer recently came on board X-Men: Days of Future Past replacing Matthew Vaughn who moved over to begin work with Mark Millar on Secret Service, with Vaughn also rumored for the new Star Wars Episode VII as well.
It's also said that Vaughn will remain on the sequel to X-Men: First Class in some capacity, most likely as a producer.
Speaking of Millar, the Fox creative consultant also described X-Men: Days of Future Past as X-Men meets Terminator, perhaps hinting at the involvement of the Sentinels, who have been curiously absent from past X-Men movies.
X-Men: Days of Future Past begins filming in April and has a July 18, 2014 release date.