Green Lantern May Not Appear Until Justice League 2
In the wake of 2011's sub-par Green Lantern film, Warner Bros. president of creative development and worldwide production Greg Silverman spoke with EW regarding the property, and the care with which they're treating it.
"Every beat of the movie is not yet worked out. So there's the possibility that he may or may not be in Justice League 2. For now, we felt that we were introducing enough characters that the best possible place we could put Green Lantern is some introduction in Justice League 2, or barring that, a movie after."
Green Lantern is still relatively fresh in people's minds, though a few more superhero films over the coming years will probably diminish that memory for good. So it makes sense that Warner Bros. wants to take its time and ensure that the character is appropriately redeemed and re-tweaked for the big screen, so avoid wrongful connections and confusion.
With no guaranteed Green Lantern appearance in the near future, the only guarantee we have is Green Lantern Corps, which holds a June 19, 2020 release date.
Source: Cinemablend