X-Men: Dark Phoenix and New Mutants have there release dates pushed back till 2019, Dark Phoenix will be released on the 14th of February 2019 so it’s a three delay and New Mutants which was previously delayed now the 2nd of August 2019
Shane Black has posted on twitter that the teaser trailer for The Predator that was supposed to be released is only to be shown at the Cinemacon event,it will be shown in theatres etc after that.
The Han Solo film is to be screened at Cannes supposedly on the 15th of May.It will be shown out of competition though.I think Episodes II and III were the only other films in the Star Wars universe to be shown there.