As is standard with all Atlus releases, Atlus has warned against posting spoilers for Persona Q2: New Cinema Labyrinth.

Caroline:

Listen carefully, prisoners. We will inform you of the restrictions on Persona Q2: New Cinema Labyrinth! In particular, posting content about the fourth movie and beyond is strictly prohibited. Also, posting videos before the release date would be rude! If you cannot resist… Who knows what will happen?

Justine:

There are certain punishments prepared for those who are unwilling to abide by these rules: “Finding yourself in a one-on-one fight with Kamoshidaman every night.” “Making all the embarrassing scenes from your life into a movie and releasing it all over the world.” etc. There are many other things we can choose from. Please be very careful.

Official request from Atlus:

Thank you everyone for your self-restraint in posting story spoilers from after the fourth movie on social media, such as on video hosting sites, live broadcasts and Twitter. In addition, publishing videos of any of the story before the release date is strictly prohibited. We appreciate your understanding and cooperation so that as everyone can enjoy the game.

The spoiler restriction for the first Persona Q similarly prohibited spoilers from the fourth labyrinth and beyond.

Persona Q2: New Cinema Labyrinth will be released for the Nintendo 3DS in Japan on November 29, 2018.

— Persona Channel