While WB has yet to officially announce the Nightwing movie, director Chris McKay has been offering updates on social media.
The latest from Chris McKay on Twitter is to look for more news on the Nightwing movie around the month of February next year.
I would expect to be able to tell you more concrete info on our movies progress around February.— Chris McKay (@buddboetticher) December 10, 2017
Chris McKay also posted on Twitter that he hopes to film something in Detroit, Michigan, which might be Nightwing, as Detroit was actually provided the location for Gotham City in Batman vs. Superman.
Thank you from the bottom of my heart @detfilm for acknowleging the cast and crew of LEGO Batman for all of their hard work. As a fellow midwesterner I love Detroit. Hope to shoot there soon.... https://t.co/1xnq5lofKq— Chris McKay (@buddboetticher) December 7, 2017
Chris McKay also previously talked about Nightwing including that no casting decisions have been made as of yet and that it will blow fans away:
This isn't going to be like that. I want this movie to blow you away. We need time to get it right.— Chris McKay (@buddboetticher) August 4, 2017
Names that have surfaced as possible Nightwing contenders include Power Rangers and Stranger Things 2 actor Dacre Montgomery and American Horror Story's Finn Wittrock.