Unfortunately for Aksys, they didn’t get a chance to announce the game. Ghostlight did and in their release they mentioned Aksys is doing the localization work. "Yeah, theirs is better, we know," Ghostlight’s press release said about Aksys’ translation skills.
The Agarest Senki Zero project has just begun so there is no release date or pricing at this time. Ghostlight is preparing a limited edition for Europe.
While Ghostlight only announced Agarest Senki Zero for PlayStation 3, it’s unclear if Aksys will publish the Xbox 360 version too.
A tip of a top hat to Matthew for the tip!