I wouldn't expect the DVD to be released before the film. The film is expected in the last quarter of this year, according to the IMAX stockholder report. Cameron and company are actually filming some re-enactments back at the Rosarito site in Mexico where they filmed the movie Titanic. I'm not sure how I feel about that, but Cameron seems to know what he's doing. earthship.tv may cover some of that filming so maybe we'll get a better idea of what he's going for.