Re: 20th Century Fox upcoming Big Announcement
And I dont see that big of a problem to keep the third movie to release it some years after DOFP. with a movie set in present time between them.
As long as Fox ends doing a decent press release sooner than later about their big plan for future years, and the audience gets familiar with it, it will be fine.
Its not like trilogies only have to be done with a three years gap and back to back, without any other movie between them, even if they are from the same universe.
Its up to the marketing team to promote each movie, and Fox or any studio can do a pretty decent job with any proyect. so no problem to delay the third FC movie for 2018 or so.
Next Big X-Men Crossover
* 2017- X-Men: Age of Apocalypse
Edit: Forget about 2017:
Official announcement -> X-MEN: APOCALYPSE - MAY 27, 2016!!!!