A Wonder Woman LEGO set possibly reveals a big spoiler for the movie (assuming it's legit).
An Instagram user (via reddit) apparently got a peek at a Wonder Woman LEGO set where it's revealed Ares is a part of the toy. The Instagram user's description reads the LEGO set features Wonder Woman, Steve Trevor, a Giant-Man-sized Ares and a plane build.
While true the LEGO movie sets are often different than their movie couterparts, the LEGO sets do tend to use the same characters, and I think Ares fits pretty well with Wonder Woman as we don't know who the villain of the film is as of right now.
In the comics, Ares is the god of War and a major Wonder Woman villain.
There was a rumor a while back that WB was eyeing Game of Thrones' Sean Bean for Ares (and Eva Green for Circe) in Wonder Woman, but it's unknown if he landed the role.
"Wonder Woman" has a June 2, 2017 release directed by Patty Jenkins starring Gal Gadot, Chris Pine, Robin Wright, Connie Nielsen, David Thewlis, Danny Huston, Elena Anaya, Ewen Bremner, and Saïd Taghmaoui .
Wonder Woman hits movie theaters around the world next summer when Gal Gadot returns as the title character in the epic action adventure from director Patty Jenkins. Before she was Wonder Woman, she was Diana, princess of the Amazons, trained to be an unconquerable warrior. Raised on a sheltered island paradise, when an American pilot crashes on their shores and tells of a massive conflict raging in the outside world, Diana leaves her home, convinced she can stop the threat. Fighting alongside man in a war to end all wars, Diana will discover her full powers…and her true destiny.