I have a feeling that this is a Disney Sea concept for Florida. The little section above the waterfalls on the left looks like Mermaid Lagoon (which they have at Tokyo Disney Sea). So I doubt that this is the rumored 3rd park for Tokyo. Looks too big to be a 3rd park for Anaheim.
Note all the rivers and water leading away from the park at the bottom. Only the Orlando resort has that sort of room.