Very fast update today, we are as light on detail as everyone else on this. Several other sites and new providers are reporting that a new live-action Constantine movie is coming. DC Comics is working with Warner Bros. and their new producing partners Bad Robot to bring this to the screen.
The Direct claim a leak from a source has expanded on the known news that J.J. Abrams is currently developing a Justice League Dark series for HBO Max.
The source told them that Abrams is also a producer on a live-action Constantine solo film that is in the works at Warner Bros. and that the tone and approach is consistent with the Justice League Dark project, so it looks likely it will be a multi-platform play.
Keanu Reeves played the lead in Constantine, based on the Hellblazer comics line. Matt Ryan plays the character as an incidental guest star across the entire Berlanti-verse series of shows on the CW. Looking at what is rumored to be happening in the world of Batman and The Flash, you would be forgiven for wondering if a similar approach will be taken here and we may see at least cameos?