User blog comment:B214/Season 3 confirmed!!!!!!/@comment-24502975-20141124163826

Looks like it's official that we will get some sort of new info regarding season 3 on Dec. 6th.

http://www.otakutale.com/2014/new-high-school-dxd-season-3-information-revealed-december-6th/

"More information about the third season of the High school DxD anime will be revealed at the series’ panel at the 2014 Fujimi Fantasia Bunko, on December 6th."

A release date would be great, and a preview with the OP song playing and Kuroka appearing would make it perfect.