Director Zack Snyder has confirmed with EW that Justice League Part 1 will begin filming April 11, 2016, just weeks after the release of Batman v Superman: Dawn of Justice. Snyder had this to say about the beginning of the DC Cinematic Universe:
“The idea that we could begin to boot up a Justice League concept was a cool thing. It was a little bit of an ‘about time’ moment, and I don’t blame [the studio] for feeling that way, because it’s a long time coming. But I do feel like it’s a little bit of a creative hurdle. It seems like an easy thing to do at first glance, the idea that, ‘Oh, we just get the rest of the superheroes in there.’ But you have to [establish] a world where they can exist.”
Here is a breakdown of the release schedule for the DC Cinematic Universe:
March 25th, 2016 – Batman v. Superman: Dawn of Justice
August 5th, 2016 – Suicide Squad
June 23rd, 2017 – Wonder Woman
November 17th, 2017 – Justice League Part One
March 23rd, 2018 – The Flash
July 27th, 2018 – Aquaman
Unspecified Date in 2018- Batman Solo Movie
April 5th, 2019 – Shazam
June 14th, 2019 – Justice League Part Two
April 3rd, 2020 – Cyborg
June 19th, 2020 – Green Lantern Corps