It's should come as no surprise to learn that Hugh Jackman is currently in negotiations to reprise his role as Wolverine in Bryan Singer's X-Men: Days of Future Past. I'm sure Jackman will get the deal he wants and officially sign on to the film. Jackman have been in every X-Men film so far, he even made a great cameo in First Class.
The movie is a sequel to X-Men: First Class, but due to the time travel elements of the story other characters from the previous films will be involved with it as well. Just recently Patrick Stewart and Ian McKellen were confirmed to reprise their roles as Charles Xavier and Magneto. Also coming back are James McAvoy, Michael Fassbender, Jennifer Lawrence and Nicholas Hoult. I'm sure Singer is reaching out to several other cast members. I think it would be amazing if they were able to get James Marsden back as Cyclops. They might as well if they are playing up the whole time travel angle. His character should have never died.
The film is based on 1981 issue of Uncanny X-Men which came from writer Chris Claremont and artists John Byrne and Terry Austin. The story is set in an alternate future where surviving mutants have been thrown in concentration camps, Sentinels are patrolling America, and most of the X-Men have been hunted down and killed. The present day X-Men are forced to stop a key event from unfolding in order to keep that future from occurring -- maybe that one key event in the film will be to keep X-Men 3 from being directed by Brett Ratner.
It's going to be so cool to see these two very different X-Men worlds collide with each other! Jackman just wrapped production on The Wolverine.