So timeline wise, let's discuss that since I can't yet on FB. Due to the end of the film, with Jean Gray and Scott Summers alive, how does the new timeline exist?
X-Men First Class
The 1940s section of The Wolverine
The 1970s section of DOFP
And then what? The rest of the films are basically retconned out of existence though we can assume certain events still happen.
Apocalypse
The 2020s section of DOFP
So essentially we have a reboot of the series that allows us to know that Storm, Mystique, Scott, Jean, Beast, etc are all alive in the 2020s and that the events of the next film, Apocalypse, will leave all those mentioned alive.
I'm impressed that they managed to make it sensible so beautifully.