User blog comment:B214/Don't ask about season 4/@comment-210.54.238.236-20161018044358

TNK have announced that their next anime is Sin: Seven deadly sins. I reckon that, since there was that one show (daimidaler i think it was called) between season 2 and 3. Maybe they are making a system where they make at least one show in between each season of DxD. So think maybe summer or fall 2017 is when they announce season 4