This weekend Avatar comes back for more in theaters, packing an extra 8 and a half minutes and only available in 3D. According to director James Cameron, part of the reason is there are so many more 3D cinemas now than there were before, especially internationally. If you're still holding out for the (next) home release, expect even more footage with an extra 16 minutes added onto the original cut, which Cameron hopes will help hold fans over while they work on sequels that could take years to make. Oh, and the Blu-ray 3D release? The Hollywood Reporter says that's still on hold for 2011, while Cameron & Co. hold out for a larger installed base of 3D-ready displays.