Mothership Zeta
Mothership Zeta is the fifth downloadable content pack, and follows the main character after being abducted by aliens when going to explore a mysterious radio transmission from the Alien Crash Site. It will take place entirely on an alien spacecraft and is going to be a similar size to Operation Anchorage. It is set for a late July 2009 release for the Xbox and PC versions and will be released for the PlayStation 3 after the first four packs have been released (presumably 4–6 weeks after the release of Point Lookout).
Looks like Zeta will be the final one.
I wonder if the aliens are your friend or foe?
I bet they are your foes. Fighting ruthless aliens is EPIC.