The last known bit of Fallout 3 DLC, Mothership Zeta, is due out on August 3rd. As the name implies, it will grant citizens of the Capitol Wasteland their first encounter with extra-terrestrial beings, allowing them to board an alien ship and fight fistfuls of little green men. Well, if they are green; the screenshots don't show much flesh. Most interesting is the list of contents, detailing new weapons, new quests, and other interesting tidbits.

• Find and exploit new and destructive alien technology, like the Alien Atomizer and Drone Cannon.
• Explore the vast Mothership and learn the secrets of the Aliens’ master plan.
• Thwart the Aliens’ attempt to stop your escape, and take over the Alien ship before it wreaks havoc on the unsuspecting Earth below.
• Fight against the Alien Invaders, their robot drones, and turn their own horrible experiments against them.
• Ally yourself with an unexpected array of characters, both from the Capital Wasteland and from Earth’s past.

Ally yourself with characters from Earth's past? Who the hell could that be? Are they talking Fallout's past, or are we going to get some historical figures on our side? Maybe some people who have dissapeared mysteriously? As if... abducted?

The screenshots are below.