The whole thing with the Kelvin verse was predicated that JJ wanted a complete reboot, and trash the Prime timeline. Cbs said.. uh.. nope. So with Pine out, and apparently ST 1(4) shelved, so goes the Kelvin Timeline. If there was no TV shows on right now, then they might be able to select another crew, or time shift to latter in the timeline, in the Kelvinverse, but with the TV shows going, thats dead on arrival.
So.. What next?
1. Do a Prime timeline movie, be it prequal romulan war, etc.
2. Tarintino, supposidly that was with the Kelvin Verse crew, so we'll see.
3. Wait some years, and come back and do a ST4 , but not the Kirks Dad one.(Never liked that idea, In Beyond Kirk got past his daddy issues, thats done.)
4. Wait and see, cbd/paramount re merger and go forward.
There will be another Trek movie, its just a matter of.. what.!