When does Tenchi Muyo! return?

Tenchi Muyo! is a Japanese anime, light novel and manga franchise. The original series began with a six-episode OVA called Tenchi Ryo-Ohki in 1992. A second OVA series was directed by Kenichi Yatagai and was released in 1994. A fifth series is currently in development, with Masaki Kajishima serving as chief director.