Square Enix have released a comparison trailer for Kingdom Hearts 2.5 Remix trailer. The trailer puts the original SD version of the game up against the new HD version of the game and its surprisingly refreshing.
A recent teaser suggests that Kingdom Hearts 3 will deal with the ancient Key blade War. The game is still early in development hopefully we will be seeing more on Kingdom Hearts 3 very soon.
Kingdom Hearts 2.5 Remix will be available on the PS3 on the 5th of December in Europe. The 2.5 Remix will include the HD versions of Kingdom Hearts 2, Kingdom Hearts: Birth By Sleep and the HD cinematics from Kingdom Hearts Re:Coded.