Universal will probably push the Illumination film back a week to July 12th, I'm surprised Sony didn't opt for a Wednesday opening to capitalise on July 4th holidays.
Im assuming Marvel won't release more than 3 films in a year so it'll just Captain Marvel, Avengers and Spider-Man in 2019.
Bad Boys 4 probably won't be made or will be pushed back a year. I think WB probably should bring forward their DC film to June 7th to give it more breathing room or possibly move it to the end of July/early August