Now, I have no desire to see this and there is absolutely no guarantee this will happen, BUT Snyder held a private screening with WB executives of his version of JL. And because WB owns the rights to the movie, obviously Snyder would need their permission to show anything. Just like he did with his MOS screening. Make of this what you will. How far along this movie even is is up for debate. And how much work it would need to make it halfway presentable to the public is unknown.
https://comicbook.com/movies/news/ju...e-zack-snyder/