According to Movie Pilot on Dec. 6, Hugh Jackman, most well known for his role as the Wolverine in many of the "X-Men" films, mentioned that he may not be returning for the "X-Men: Apocalypse" sequel. He is preparing for the third installment of the next "Wolverine" sequel film.
Jackman mentions in an interview he's not sure if he'll be returning in the next installment.
"I don’t know whether or not I will do this next movie. I am really proud of this movie and I am excited to develop something with Jim Mangold from the beginning because that is a great ride. That’s exciting, to see what we come up with but I have a very high expectation of what it would need to be [for me to star in it] and if it doesn't reach those, I won’t be doing it".
Apparently, Jackman does have standards for what he appears in, even if it's a favorite and popular franchise. One may be not entirely sure that Jackman is apprehensive about the standards of what the the next installment may present.
Jackman did mentioned he was on the phone with James Mangold about the next "Wolverine" stand-alone film discussing ideas, but has said that there is no script for it yet.
It can be assumed that since Jackman isn't entirely sure about the next "Wolverine" film gig, one can also not be sure about him appearing in "X-Men: Apocalypse" either.
In the mean time, feel free to enjoy "X-Men: Days of Future Past" on May 23, 2014.