Naturally, all of two seconds after the last update, Happinet’s product listing makes it completely apparent that Astaroth is indeed back in Kuja Senran no Shou Volume 3 this October 14th. This is along with the already confirmed Belial, and their ally Arioc.
It’s her third direct appearance in the entire series, the last being way back in Chapter II, Volume 2 from 7/17/2006.
Might as well also note, the Facebook page now has 50 likes! Thanks, folks!