I'd rather they didn't go into AoA immediately tbh.
They've said nothing about it being Age of Apocalypse, so I wouldn't worry just yet.
And even if it is, it may be that the events of DoFP cause
the AoA. It could be like BTTF2 and 3, where all the time travel mostly happens in 2, and 3 is primarily about setting everything right again.