X-MEN APOCALYPSE takes us back to the 80's. This would be the timeline after the young Xavier in Days of Future Past re-establishes his school for gifted mutants - which means younger versions of Jean Grey, Cyclops, Nightcrawler, Storm and the previously snubbed Jubilee. Front and center would be older versions of Xavier (James McAvoy), Magneto (Michael Fassbender), Beast (Nicolas Hoult) and Mystique (Lawrence).
Of course, we can't have Apocalypse without his Four Horsemen. I am not sure how they will spin this, but in the film, Apocalypse's Horsemen will consist of Angel, Psylocke, Storm and Magneto.
X-MEN APOCALYPSE will be released May 27, 2016.