Old news are old, but I feel like updating this thread.
Soul Sacrifice Delta Announced for PS Vita coming exclusively the PlayStation Vita in March 2014. Yep, they are making it a series.
Also there was yet another bunch of free DLC in the store:
The Cobbler Triplets and the Old Master (Incubus and Beelzebub bosses)
Additional Quest: The Iron Lady's Tears of Red (Iron Maiden boss)
Additional Pact: The Fall of the Gods (Druid God and Romalus God bosses)