I thought the official announcement was after the last three they planned another three? Because they've been making allusions to the commonwealth ... well since FO3 Original Content. Edit: "We've released the trailer to Fallout 3's final DLC, Mothership Zeta. Additionally, Fallout 3 Lead Artist Istvan Pely has written a team diary discussing how the DLC came to fruition. Mothership Zeta will be available Monday, August 3rd on Xbox Live and Games for Windows Live for 800 points, and will be released at a later date for PlayStation 3."