According to the info on Gigazine, Jigoku Shoujo Mitsuganae will be airing weekly airings in October.

The show will be likely to air on the 17:00 Saturday slot on Tokyo MX, or 02:25 on Sundays for Mainichi viewers.

Source: Gigazine via Sankaku Complex

I can’t wait for the show to start and more people to be sent to hell. Wohoo!