LordOfLore
Banned
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Warner Bros. apparently showed off a screening of the Justice League movie last night.
Users on Twitter are reporting they have seen the movie, and other users are also reporting they have friends that have seen the film.
Sorry, no Justice League spoilers have hit the net, but it's been said the movie is amazing.
Update: It's further said that a Superman fan that was not happy with Man of Steel or Batman vs. Superman loved Justice League, so take that for what it is worth.
The attendees had to sign a non-disclosure agreement, which means if they get caught revealing information, they can get sued.
That said, eventually as we get closer to the November release of the Justice League movie, WB will have screened it more times, and you can expect spoilers to leak out.