Whoa. And here I am thinking the series was over.
If you saw the secret scene from KH2 you would know it is not over, not anytime soon.
358/2 days: Roxas' story from creation to final fight with Riku. I do wonder what he was doing in that timeline.
Birth by sleep: A story about the Keyblade masters before Sora.
There is one more, though it is a different kind of game...
Code: A mobile phone game, (that rips my soul out.) about King Mickey in events that happen after KH2.