A Girls' Frontline (Dolls' Frontline in Japan) anime was just announced on MICA Team's dev livestream today, adapting the game's story into a TV anime series. It'll be produced by Warner Brothers Japan and animated by Asahi Productions.
Official Website
While the franchise does already have an anime via the Healing and Madness chapters, those were chibi-style comedy spinoffs, rather than an adaptation of the actual story like this is going to be. Excited to finally see the story animated