The London MCM Expo featured an Ultramarines panel. Chock full of information it really helped explain the foundation of the movie as far as people involved, technology used, and the like. They still won't tell us who the baddies are in the movie, but still a great panel with lots of information.
If you can't have the volume loud enough to hear everything (like say at work) there is a transcript of the panel.
See the video of it after the jump.