If the Raiho shadow wasn’t enough of a clue Gamefly just spoiled Atlus’ surprise. They have a listing for Devil Summoner 2: Raidou Kuzunoha versus King Abaddon in their database (thanks Denpa no Sekai!!). According to Gamefly’s schedule the PlayStation 2 game will ship in May which sounds reasonable given the seven month localization gap between Shin Megami Tensei: Devil Summoner - Raidou Kuzunoha vs. the Soulless Army.
Oh and Raiho, the Jack Frost mascot dressed in Raidou’s clothes, makes an appearance in the game too. Fingers crossed Atlus gives these out as a pre-order bonus like they did in Japan.