DC is looking to make fans forget it's first foray into the Green Lantern Mythology (Sorry Ryan) with a new bolder approach to further expand the DCU. The movie previously announced as "Green Lantern" will instead be "Green Lantern Corps", Warner Bros announced at their San Diego Comic-Con 2015 panel Saturday. The film will presumably keep its June 19, 2020 release date, meaning it's still a ways off (it's the current final film of WB/DCE's announced schedule).
Along with the film's name change, an image was shown featuring a large group of Green Lanterns, including multiple Earth-bound Green Lanterns, something rumors have been pointing to for the last few weeks. Actors Tyrese Gibson (Fast & Furious) and Chris Pine (Star Trek) names have been tied to some of these rumors.
As of now, no casting or crew information was released about the film.