The PlayStation Store was updated recently with a Kingdom Hearts All-in-One Package that includes immediate access to all Kingdom Hearts game collections on PS4. [Thanks, @ChallengerDoob!]
Pre-ordering the pack, which costs $99.99, will also net players a Kingdom Hearts III ‘Impossible Odds’ dynamic theme. Pre-ordering the Pack lets you immediate unlock and play Kingdom Hearts III when the game releases.
Kingdom Hearts III releases in Japan and Asia on January 25, 2019 and in North America and Europe in January 29, 2019 for PlayStation 4 and Xbox One. Kingdom Hearts HD 1.5 + 2.5 ReMIX and Kingdom Hearts HD 2.8 Final Chapter Prologue are available on PlayStation 4.