In EW's latest coverage of the movie, it's noted Green Lantern "is not referenced " in Batman Vs. Superman.
Futhermore, it's suggested Green Lantern may not return to the big screen for a while.
“[Green Lantern] is an incredible character. He’s actually multiple incredible characters,” said Greg Silverman, the president of creative development and worldwide production at Warner Bros. “There’s real opportunity there. We didn’t do a great job on that first Green Lantern movie. This is a character who deserves to be treated in the same way that Batman and Superman and Wonder Woman are being treated now, which is with great reverence. I guess I can say to the Green Lantern fans: if they can be patient with us, I think they’ll be really happy.”
So how long will Green Lantern fans have to wait? Possibly until 2019 or after.
“Every beat of the movie is not yet worked out," producer Charles Roven offered. "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.”
WB currently has the Green Lantern Corps movie set for 2020 following the 2019 release of Justice League - Part 2; so we may have to wait until the standalone GLC movie.
"Batman v Superman: Dawn of Justice" has a March 25, 2016 release starring Ben Affleck as Batman, Henry Cavill as Superman, Gal Gadot as Wonder Woman, Amy Adams as Lois Lane, Laurence Fishburne as Perry White, Diane Lane as Martha Kent, Jeremy Irons as Alfred, Jesse Eisenberg as Lex Luthor, Ray Fisher as Cyborg with Callan Mulvey, Holly Hunter as Senator Finch and Tao Okamoto as Mercy Graves. Justice League is to follow directed by Zack Snyder as well.
Fearing the actions of a god-like Super Hero left unchecked, Gotham City’s own formidable, forceful vigilante takes on Metropolis’s most revered, modern-day savior, while the world wrestles with what sort of hero it really needs. And with Batman and Superman at war with one another, a new threat quickly arises, putting mankind in greater danger than it’s ever known before.