Atlus’ words not mine. Nevertheless, seeing the Snow Queen quest appear in Shin Megami Tensei: Persona should be exciting for anyone that played Revelations: Persona.
The Snow Queen quest is an alternate storyline, which you can discover early in the game. This side story features a different cast of characters, Yuki being one of them, and *that* Shin Megami Tensei demon. You know, Mara.