New inside info!
X4
No, were not talking about a fourth X-Men film. Were talking a X-Men/Fantastic Four crossover film which a source has told us is (unsurprisingly) is in the works and might actually be set in the present with some of the original X-Men cast. If the film is indeed happening, its likely in the very early stages of development with them focusing on Apocalypse and Fantastic Four currently.
http://www.eatgeekplay.com/after-apocalypse-whats-next-for-the-x-men-film-franchise/