Box Office is claiming that 20th Century Fox has slated it’s release dates for it’s three X-Men films for 2018. They are as follows.
X-Men: The New Mutants - April 13th, 2018
Deadpool 2 - June 1st, 2018
X-Men: The Dark Phoenix - November 2nd, 2018
Deadpool 2 also begins filming this June in Vancouver. New Mutants shoots some scenes in Boston, and will also start shooting in June.
SOURCE: BOX OFFICE