SPOILER: There is a scene at the end of the closing credits: Men from Essex Corporation (run by X-Men villain Mister Sinister, aka Nathaniel Essex) arrive at the Weapon X base and collect samples of Wolverine's blood. This leads into Logan (2017).
When the 20th Century Fox logo fades away, the X in the logo stays for a second longer before it also fades away. The "X-Men" score can also be heard near the end of the logo.
The film title appears in a sequence of religious and historic symbols.
The Marvel logo is the classic one used for the X-Men films from 2003 onwards.
The X-Films' title sequences features a weapon used by the villain of each film, backed by the X-Men's Cerebro device. In this film it is Apocalypse's pyramid device.