Looks like the Justice League, right? And it is, though I can tell you that there are subtle but distinct differences to these heroes that I managed to see on the set of Justice League that are NOT reflected properly in this art.

Right off the bat, I can tell you that the Trinity -- Batman, Superman and Wonder Woman -- look very similar to what was shown to us on the set of Justice League. Wonder Woman's costume, in particular, doesn't look like it changed too drastically from Batman v Superman to the Justice League film. Batman will make some upgrades, which I have detailed here, and Superman is dead. Isn't he? OK, fine. IF he returns, he'll likely look like the hero seen in the above photo. We only saw Supes in one piece of concept art on the Justice League set, and he looked like this.

As for the new members of the team?