Marvel and DC superheroes have set a date to square off for us giving them money: May 6, 2016. That's when both whatever Superman/Batman thing and an also still-unnamed Marvel film hit theaters, and apparently neither side is budging on this confluence of goofy costumes.
Technically, Marvel did set the date first, but since they did it so early, with no indication of what film they even planned to put there, it was kind of bullshit--like trying to call shotgun when you're still inside. So when Warner Bros. called them out on it with their superhero project, it was kind of assumed Marvel would flinch, because come on, you can't call shotgun inside. And even outside, you should have to see the vehicle first. But according to /Film, Kevin Feige isn't budging, the Marvel Studios president telling them, "We're certainly keeping the date there and we'll announce what that movie is, I assume, in the next few months."
In related news, never has there been a more obvious counter-programming release date for The Best Exotic Marigold Hotel 2.