According to Business Insider, Disney Interactive's CFO Jay Rasulo explained that next year would see two big releases, one of which hadn't been announced yet.
He said, "We start the year right out with a big title "Epic Mickey 2," and another big title that hasn't been announced yet, but coming mid-year, and continuing to grow in the social space."
While Kingdom Hearts HD 1.5 Remix has technically been announced, it hasn't been for the West and Business Industry definitely seems to think it's the most likely candidate given that none of the studio's upcoming movie slate really carry enough weight to justify the "big" prefix in terms of game tie-ins.
http://m.ca.ign.com/articles/2012/09/25/report-kingdom-hearts-15-coming-west-next-year