15th February 2019 - Movie on Hold
There were also projects in the works involving Booster Gold and Blue Beetle, Nightwing, Deadshot, Justice League Dark, Cyborg, Lobo, and a few others, but most of those seem to be either on hold, cancelled, or in some stage of development Hell for the moment. I think we might eventually see a couple of them revive and join the list of future DC films, but for now I'm not counting on it (even though I'd love to see all of those projects). Which is fine, since right now there are plenty of DC projects in the works for coming years, more than enough to satisfy fans and audiences. Perhaps instead some of these projects will wind up evolving into serialized series on the new WarnerMedia streaming service.
Source:
23rd February 2017 - Warner Bros Developing Live-Action 'Nightwing' with 'The Lego Batman Movie' Director
Chris McKay, who most recently directed the Lego Batman Movie for Warner Bros., is in negotiations to helm the new film, and Bill Dubuque (The Accountant) is writing the script.
Nightwing, aka Dick Grayson, is perhaps best known for being the original Robin. Grayson was the youngest member of a family of acrobats known as the "Flying Graysons."