The Australian Classification Board, a government body responsible for the classification and censorship of films, video games and publications in Australia, has given Kingdom Hearts III a PG rating for mild themes and fantasy violence.
You can find the full report here.
Last month, Kingdom Hearts III was given an ESRB rating of E10+, which stands for everyone of (and above) the age of 10, with alcohol reference and fantasy violence. ESRB have not published further rating information on this title yet.
Kingdom Hearts III will release in Australia and the West on January 29, 2019.