More plot info, but vague. The League will be looking for the three Motherboxes. One we already know of, and it's within Cyborg. The other two are with the Atlanteans and the Amazonians, which is where I suspect Ocean Master and Ares will come into play
Willem Dafoe's character has been announced! He'll be playing Vulko, who is a character from the Aquaman universe.
We'll see Batman and Flash wearing a few different suits. I guess when we first see Flash, it's something he made himself, then we'll get the suit that we all love and know later in the film
Junkie XL will be scoring the film. He worked with Hans Zimmer for the Dawn of Justice score. I didnt care for the score and it was a letdown compared to Man Of Steel's EXCELLENT compostion. However, Junxie XL scored Mad Max: Fury Road, which was both a great movie and soundtrack
I'm curious about how the box office numbers will look with something like Justice League. I guess Suicide Squad will have a lot to say, does Wonder Woman come out before as well? Because we all thought BvS would make a billion easily and look at how that turned out. And going into JL, there's another movie with mixed reviews on top of the already shaky reviewed Man of Steel.
It has made 871million, which is an incredible amount for any movie. Just because it didnt hit a billion doesnt mean it wasnt a box office hit. It would have made a billion if the film warranted repeated viewings by the general public, which it didn't. However, if JL gets positive reviews, im sure it will hit a billion.
EDIT: Only 6 superhero films have made it past a billion
The Avengers
Avengers: Age of Ultron
Iron Man 3
The Dark Knight Rises
Captain America: Civil War
Thr Dark Knight