Iron Man 3 will be released in Japan on the 26th Of April in 4DX at the Korona World Theatre Chain.
4DX is a Motion Picture Technology developed by South Korea that uses Strobe Lights, Mist, Jets of Water, Vaporised Scents, Tilting and Vibrating Seats, Fog and Bubbles to envelope moviegoers in a 360 degrees cinematic experience.
4DX Cinemas are already present in South Korea, Poland, Czech Republic, Taiwan, Bulgaria, Chile, China, Israel, Russia, Mexico, Brazil, Peru, Hungary and now Japan. Will be introduced to the United States later on this year.
Avatar was the first movie to be screened in 4DX in 2009, followed then, amongst others, by: Pirates Of The Caribbean:On Stranger Tides, Real Steel, Rise Of The Guardians, Transformers:Dark Of The Moon, The Hunger Games, The Croods (Coming Soon) and now, Iron Man 3.
More info on the Official 4DX Website