The Wizard of Oz is celebrating its 75th Anniversary this year, and to commemorate this milestone in cinema, Warner Bros. is releasing the film in 3D IMAX for a one-week engagement starting September 20. They've released a trailer in support of this event. Relive the magic of Dorthy, the Scarecrow, The Lion, and The Tinman as the iconic fantasy comes springing back to Technicolor life this fall, along with a 3D home video release as part of The Wizard of Oz 75th Anniversary Collector's Edition Blu-ray available October 1st.