The Gooseberry project is aimed to be a feature-length film compared to Big Buck Bunny and the other Blender movie projects up to this point that have just been short films. Gooseberry will be developed by twelve teams throughout the world and as usual the movie production data will be available under open source and Creative Commons licenses. Doing this film with Blender will also lead to improvements in the software itself.
This is the foundation's most ambitious project yet and are seeking crowd-funding help. More details on Blender Gooseberry can be found via the Blender.org press release.