After much teasing by Tetsuya Nomura that a new world would be introduced in the mobile game, Kingdom Hearts Union X[cross], the latest update to the Japanese version of the game has confirmed that the new world will be based on Wreck-it Ralph, marking the first time that a new Disney world was introduced in the game. Check out a screenshot showing Game Central Station from 'Wreck-it Ralph' below:

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As of now, there is no word on when this particular story update will be available internationally.