There’s a bit of a false story being spread around today that says the Dawn of the Justice League special confirmed Green Lantern would be in Justice League. Not only that, people are thinking the entire Green Lantern Corps would be in Justice League. But that’s not what the special said.
Towards the end of the special’s reveals, Geoff Johns started talking about Green Lantern and the Green Lantern Corps, saying they would be coming “to the Justice League universe“. He wasn’t talking about the 2017 Justice League movie (which rumors say only has Green Lantern appearing at the very end), but the 2020 Green Lantern Corps movie that exists in the same universe.
You can see a video of this below: