Not much info besides a few key things:
- Staffed by the same team who developed SMTIV
- While it shares the moniker of SMTIV, it's a new game and story.
- That game's central theme is Deicide (how original Atlus that's almost the theme of every entry)
- It's coming out in Japan next February for the 3DS.
I'm honestly pretty excited for this. I had a blast with SMTIV and Atlus has milked the Persona franchise so much lately, it's nice to see something from the actual mainline series every once in a while.