The Australian Classification Board has rated Kingdom Hearts Unchained χ "G", for everyone. This rating, which appeared on the online database on September 3, 2015, is the first indication that Kingdom Hearts Unchained χ will be releasing outside of Japan and North America. An Australian release is now all but confirmed, and with that we can also assume a European release. However, it is still unclear if the game will be localised into other European languages.

Thanks to KHInsider for the tip, you can see a screenshot of the game's Australian rating information below: