20th Century Fox has announced that the recently released Avatar trailer took in 4 million streams the day it was made available on Apple.com. In a press release from the studio they said:

Twentieth Century Fox announced today that the Avatar teaser trailer has become the most-viewed trailer ever on the popular iTunes Movies Trailer section of apple.com, which Thursday hosted the long-awaited public first look at writer-director James Cameron's motion picture epic. The teaser registered over four million streams in its first day on the site, shattering the previous record of 1.7 million.

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On Friday, the trailer arrived in theaters around the world, presented in all formats, including IMAX 3D, IMAX 2D, digital 3D, digital 2D, and 35mm 2D.

The record-shattering online trailer debut marked the launch of Avatar DAY, an unprecedented experience that also saw the unveiling of special scenes - in 3-D - prepared especially by Cameron for this event. The extended look at AVATAR unspooled for two showings only Friday evening. The U.S. showings were held in select IMAX 3D theaters, and international unveilings were in select digital 3D and IMAX 3D theaters. Reservations for all showings were completely booked.

In addition, Fox took the wraps off its special "3D"/lenticular one-sheet posters for the film, Ubisoft unveiled the trailer for their videogame James Cameron's Avatar: The Game, and Mattel revealed the action figures for the film's Avatar and alien Na'vi characters.

Avatar takes us to a spectacular new world beyond our imagination, where a reluctant hero embarks on a journey of redemption and discovery, as he leads a heroic battle to save a civilization. The film was first conceived by Cameron 14 years ago, when the means to realize his vision did not yet exist. Now, after four years of actual production work, Avatar delivers a fully immersive cinematic experience of a new kind, where the revolutionary technology invented to make the film, disappears into the emotion of the characters and the sweep of the story.

Avatar opens in theaters everywhere December 18, 2009.

CLICK HERE to view the Avatar trailer.