March, April, November or December are all proven good times to release films. Summer is not the only option here. Theres no reason Deadpool or Wolverine can't be released here in the future. Even Star Wars is moving away from Summer. Friggen STAR WARS.
Not to X-Men films. And its not a good idea to test a X-Men film in those months especially with a Deadpool or Wolverine 3 or X-Force movie.
And Star Wars will do well at December (holiday season) since its box-office history shows it has strong box-office legs like a LOTR film and a Harry Potter film and not weak box-office legs like a X-Men film.