The descriptor from Beast’s image (“Trask’s Plane”) further confirms the involvement of the Trask character in early iterations of X-Men: Apocalypse.
With a world-ending villain who is so powerful he essentially makes Magneto a henchman, it takes old, new, and old-but-newly-reintroduced X-Men to save the day.
After the events of Days of Future Past, it would make sense that Trask would have a vendetta against the mutants.
X-Men: Apocalypse is now available on Digital HD and debuts on Blu-ray, 4K Ultra HD & DVD on Oct. 4, 2016.