The monologue in the screenplay — dated June 6 — references a battle set at the Nile involving the Four Horsemen, who made an appearance in the end credits of X-Men: Days of Future Past.
This may also serve as indirect confirmation that he will be directing the Days of Future Past sequel as his status as helmer was up in the air after being sued for sexual assault.
Singer also tweeted a photo last week of himself working on the Apocalypse script with Simon Kinberg and Michael Dougherty. Dan Harris is also helping pen the screenplay.
Meanwhile, X-Men: Days of Future Past outlapped Captain America: The Winter Soldier this weekend to become the highest grossing movie of the year globally. The pic has hauled a whopping $712.7 million — more than any other installment in the series — in just over a month. The second most successful movie in the franchise, X-Men: The Last Stand, grossed $459.3 million worldwide.
X-Men: Apocalypse will hit theaters on May 27, 2016.
Photo credit: Alberto E. Rodriguez/WireImage