It appears that there may be a live-action Anthem movie in the works if you extrapolate broad hints from film director Neill Blomkamp, the former director of the Halo movie. Under the photo of a "real" Javelin, Blomkamp wrote, "Been working on something new. Really excited to share this soon! #anthemgame".
According to Gamespot, Blomkamp utilizes a "lived in style" that he has "established in movies like District 9, Elysium and Chappie".
We don't know precisely what Blomkamp's involvement with Anthem is, or will be, but it's possible it's a feature length film, a short film or some other project based on BioWare's IP.