Spike Chunsoft announced the release date of the PlayStation 4 version Portal Knights which will be available in Japan. The package and the download verison of the game release on the same day on June 29, 2017 for 3000 Yen + tax and 2500 Yen + tax.
This game is the official port version of the PC (Steam) game Portal Knights which is available with Early Access version at the moment so it will be funny if the Japanese PlayStation 4 version release earlier than the PC stable / final version.
By the way, the package version Portal Knights in Japan comes with a special book full with items collectios and recipies and methods to create new ones. Until more information, please stay tuned.