As this is the first time that Western players can experience the "full" KH2 and Birth By Sleep storylines, Kingdom Hearts HD 2.5 Remix is essential playing for the hardcore Kingdom Hearts faithful.
Tai Yasue of the Kingdom Hearts franchise has teased the idea of possibly bringing HD 1.5 and 2.5 to the PlayStation 4 or Xbox One, following fan suggestions.
Now that Kingdom Hearts HD 2.5 Remix has launched in Japan, a new secret movie has been found, leading up to Kingdom Hearts 3. Also, the ending credits strongly suggest that an HD version of Kingdom Hearts 3D: Dream Drop Distance is on the way.