Given how insanely popular/successful Frozen was I'd be surprised if they didn't incorporate it into the game somehow even if it's only a summon, keyblade, etc. In fact I bet that will be a big reveal in Winter later this year. Confirmation of a Frozen world or something to do with that IP. The timing makes sense and it's around the anniversary of Frozen if they announce it at the time I'm thinking of anyways. I liked Wreck-It-Ralph a lot, and fun fact for those that don't know the sequel just got announced yesterday, but I don't really see it happening as one of the worlds we visit. Main reason for that is all the different copyright issues and hoops Square and Disney would have to jump through what with all the video game characters, worlds, etc. Plus it's really weird to think just how meta that kind of experience would be in a KH game. Playing a game within a game? I mean sure it might work but it just doesn't gel all that well imho. I mean do we really wanna see Sonic, Mario, Qbert, and other out of place characters in a KH game? I know that's one of the turn offs for the KH series is Disney and FF characters but there's already so much going on and personally I don't think it would work all that well. Now if Ralph was a summon that would be pretty cool and neat to see especially with how destructive and powerful he is and or can be.