All previous Kingdom Hearts games before Dream Drop Distance is recieving an HD upgrade and is releasing on the PS3, Wii U and PS Vita
I totally wasn't expecting this and this is also an E3 rumor so it may never come true but I seriously hope this does.
We've gotten word that next week, all of the titles you see in the image above will be remastered into what we currently know as Kingdom Hearts: HD Remix or Kingdom Hearts: Remembrance. Our reoccurring source Geno, who had been the first to break news about the Castlevania Lord of Shadows sequel prior to anyone else, has informed us that a pending E3 announcement will involve Kingdom Hearts 1,2, Chain of Memories, 358/2 Days, and Birth By Sleep receiving HD upgrades and launching on PS3, Wii U, and PS VITA. According to Geno, not only will these Kingdom Hearts titles receive HD makeovers, they'll be supported with new side quests that'll tie up the plots of each game. The Wii U version in specific is said to make plot connections with Kingdom Hearts 3D (Dream Drop Distance), which has yet to release in America on 3DS. Although details are kinda slim, we expect Kingdom Hearts HD Remix/Remembrance to be revealed at Sony or Nintendo's E3 press conferences.