Kingdom Hearts - The Story So Far - includes Kingdom Hearts HD 1.5+2.5 ReMIX and Kingdom Hearts HD 2.8 Final Chapter Prologue. If that's confusing to you, then perhaps you're the very person that should pick this bundle up? Simply put, this package includes the "essentials" on what you should probably know ahead of Kingdom Heart 3's launch and probably a lot that you won't need to know.
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 II 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)
• KINGDOM HEARTS FINAL MIX
• KINGDOM HEARTS Re:Chain of Memories
• KINGDOM HEARTS 358/2 Days (HD Remastered cinematics)
• KINGDOM HEARTS II 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)
This all in one package will retail for $39.99 (USD) and will be out on October 30. Pre-orders are available now through the Square Enix store. This is only available for the PlayStation 4, despite Kingdom Hearts 3 also coming to the Xbox One. To the Xbox players, uh... get to reading instead I guess?
Also, this new package seems to be the Kingdom Hearts All-in-One Package that appeared on the PlayStation Store earlier this year only without the Kingdom Hearts 3 pre-order. If you take out $60 price of Kingdom Hearts 3, they're priced identically. Maybe something to consider instead if you still haven't pre-ordered Kingdom Hearts 3 yet and want to get it all at once.
But I much prefer this summary over landofodd.net's summary. It doesn't cover all games, but... Covers enough and with fewer words and more pictures.