Rated M for mouthful.
The ESRB has rated Kingdom Hearts HD 2.8: Final Chapter Prologue E for everyone.
Though not a lot of new information has been released regarding the upcoming Square Enix PS4 Exclusive, the rating summary offers some small details on what the game contains:
This is a compilation of action role-playing games in which players assume the roles of young warriors traveling through fantastical worlds to stop the spread of darkness. Players use giant key-shaped swords and magic attacks to defeat Dream Eaters, classic Disney villains, and other creatures (e.g., dragons, imps, slimes) in melee-style combat. Battles are accompanied by light effects, cries of pain, and impact sounds; enemies disappear into colorful orbs and particles when defeated. A handful of sequences allow players to throw projectiles at other characters from a first-person perspective. Some cutscenes depict human characters struck and/or wounded by magical swords and explosions. The word “hell” appears in the dialogue.
Kingdom Hearts HD 2.8 Final Chapter Prologue will be released in Japan on January 12th, 2017, before being released elsewhere on January 24th.