Fox Russia has released an extended Prometheus featurette showing a lot of new behind-the-scenes footage. The video also includes interviews with the cast & film crew but unfortunately you can barely hear them due to the Russian voice over. The footage was published ahead of embargo and it has now been removed from the original source. You can watch it below or download it here.
Update 30/05/2012: Fox has officially released the extended featurette today. You can watch the English version of the video below: