Soul Sacrifice Delta is coming in March 2014!
According to the SCEJA conference translation (and Keiji Inafune), we’ll be getting a completely new version of Soul Sacrifice only a year after release. It’s not a mere update, but a brand new version with brand new elements and items. They’re also introducing a “Neutral force” to compete directly against the “Light” and “Dark”.
Not much information other than that, but we’ll be seeing it at the Tokyo Game Show for sure.