Crunchyroll previously reported on how High School Fleet, a 2016 TV anime with direction by Yuu Nobuta and animation by Production IMS, was receiving a new original animation video scheduled for release in 2017.
We’ll just have to keep a weather eye on the official feed for further updates.
Although nothing concrete besides the upcoming 2017 OAV has yet been announced, the idea that “various” projects are in development for High School Fleet has led some fans to speculate that more anime (such as a 2nd TV series or a theatrical film) may be on the way.