They’ll both be released-
http://comicbook.com/marvel/2018/07/28/x-men-dark-phoenix-new-mutants-not-cancelled/
The real question is what becomes of the planned X-Force and Gambit movies. Gambit’s probably no real loss (I’m sure Channing Tatum could still be hired in the role). X-Force is trickier, since at least three characters are cast (Deadpool, Cable, Domino).
I think it’s fair to assume that none of the movies on the Marvel list are X-Men or F4 (plus I keep reading around here that someone else might have the F4 rights?), so at the earliest, I think we’ll see the X-Men and F4 integrated late 2022 (I’m not sure what dates Fox had booked for various X-Men films, but I’m sure there was one in 2022).