Birth by Sleep to take place entirely in Disney worlds
Development is being handled by the same studio that managed Re: Chain of Memories (unreleased in the States). The battle system employed will be largely similar to the card-based system featured in the PS2 remake. "You set up a card deck consisting of commands that are fed into your command menu," Nomura explained.
Details for Birth by Sleep are still hard to come by, but we're intrigued to see how this battle system will feel, especially for Kingdom Hearts regulars. Considering Square's incredible job with Crisis Core, we're confident they can pull off a PSP title that not only looks good, but plays well too.