From Collider:
“Some of the trailers had ‘Coming Soon’ on them and some of them said ‘February 14th’. It was a date, February 14th, that we initially liked for the movie but when we realized that we weren’t gonna have the visual effects ready to release it globally the way we wanted to, and the Gambit date opened up because it wasn’t gonna be ready for that June 7th date. We looked at that date versus the February 14th date, the studio did and we did, we felt like that June date was a bigger opportunity for us globally. More screens, more IMAX screens, a better chance to play in China where these movies have a massive following. What we found when we released the trailer was that 44, 45 million views of the trailer were in China alone… Specific for us, it is an opportunity to be a bigger movie day-and-date globally.”