With all the news about apps for movies, albums and streaming content, I’ve been curious to see how iTunes is going to change to keep up with the times. While it is part of the same big, happy family of Apple products, a number of my colleagues here at Giant Interactive have wondered how iTunes Extra will adapt to the changing world of media consumption. As apps become more commonplace and versatile, will there be a role for this media form? Well, I think we’ve gotten our answer. Via Home Media Magazine, (which has my favorite weekly DVD/Blu-ray sales chart), we learn that iTunes is debuting a new ‘enhanced feature’ product for Avatar. The article notes that this improved iTunes download “…includes a feature that allows viewers to interact with the performance capture and visual effects levels in 17 scenes. Dubbed ‘Green Screen X-ray,’ the unique feature offers a view of original green screen footage while the film plays.”