User blog comment:B214/General Discussion/@comment-30924344-20170320015258

I just had this thought. Season 4 will be announced at the end of 7 Deadly Sins anime made by studio Artland x TNK. TNK cooperated with Artland to make the anime, so that they have the funding to make season 4. It will air in the fall season because 7 Sins ends on the 1st of June.