The Apocalypse DLC is set to release in February, which I find odd and pretty rushed. Are the folks at EA/DICE rushing things through in order to make some room in the schedule for Battlefield 2018
In my humble opinion, Battlefield 1 needs to die. Not sure how many active players it is seeing these days, but I never did get into it. So as to the point brought up by @BattlefieldMan , yes I hope that this is the last Battlefield 1 DLC, so we can get on with whatever the next Battlefield game is.
Hard to know for sure, as there are still some very populated Battlefield 4 servers out there. As long as people continue to pay for the slots, I dont see why EA/DICE would shut it down.