During Sony Interactive Entertainment Korea’s 2016 PlayStation Conference, it was confirmed that Persona 5 will be releasing on PlayStation 4 in Korean in 2017.
The South Korean release will be dubbed in Japanese and subbed in Korean.
Additionally, the Persona 5 PV4 trailer was shown subbed in Korean.
The announcement and trailer can be seen in the twitch archive below at the 00:43:28 mark:
Persona 5 is slated to be released for the PS3 and PS4 in Japan on September 15, 2016. It will release in North America and Europe on February 14, 2017, and in traditional Chinese and Korean in 2017.