According to ad copy included in solicitations from Japanese online retailers Tsutaya and Honya Club for an upcoming Hell Girl manga omnibus, a 4th season of Hell Girl (known in Japan as Jigoku Shoujo) will begin broadcasting in July of 2017.

The manga compilation, which collects chapters from Miyuki Etoo's "comicalize" adaptation of the Hell Girl TV anime and which will be published in Japan on March 13, 2017, lists a booklet featuring setting materials from the new anime as a bonus.

Because no official announcement for the series has yet been released, details on the new production are currently scarce. Seasons 1 and 2 of Hell Girl are directed by Takahiro Omori, while Season 3 is directed by Hiroshi Watanabe. All 3 seasons feature animation by Studio Deen. Funimation published Season 1 of Hell Girl in North America, while Sentai Filmworks publishes Season 2 and 3.

Sentai Filmworks describes the story of Hell Girl as follows: "They call her Jigoku Tsushin - the Hell Girl. For endless years Ai Enma has served as the embodiment of revenge itself. If you desire to send another's soul to eternal torment, contact her via the internet and she'll come from her land of endless sunset to deliver your revenge... at the cost of sending your own soul, of course, but it's a price a surprising number of people are willing to pay."

Sources:

Hachima Kikō

Anime News Network

Paul Chapman is the host of The Greatest Movie EVER! Podcast and GME! Anime Fun Time.