Square Enix is releasing a Kingdom Hearts compilation called Kingdom Hearts - The Story So Far.
Kingdom Hearts - The Story So Far is a collection of the Kingdom Hearts games which spans nine chapters of the series.
The compilation will be made available for PS4 and includes the following games:
Kingdom Hearts HD 1.5+2.5 Remix
- Kingdom Hearts Final Mix
- Kingdom Hearts Re:chain of Memories
- Kingdom Hearts 358/2 Days (HD Remastered Cinematics)
- Kingdom Hearts 2 - Final Mix
- Kingdom Hearts Birth by Sleep Final Mix
- Kingdom Hearts Re:coded (HD Remastered Cinematics)
Kingdom Hearts HD 2.8 Final Chapter Prologue
- Kingdom Hearts Dream Drop Distance HD
- Kingdom Hearts 0.2 Birth by Sleep – A Fragmentary Passage
- Kingdom Hearts χ Back Cover (movie)
The games are not listed in chronological order, which will be confusing to those new to the series. Thankfully, the Kingdom Hearts wiki has a handy timeline posted, so consult it if you wish to play the games in the proper order.
It will be released on October 30 for $39.99. It is a US-only release at this time.
That should give you plenty of time to get caught up before Kingdom Hearts 3 releases January 29 for PS4 and Xbox One.