SEGA's European blog has an official teaser trailer for Gearbox's upcoming shooter in the Aliens universe; Aliens: Colonial Marines. It looks to take place direct after the events in Aliens which is sure to please fans. We'll no doubt see more of this at E3 shortly but the final game is expected in Spring 2012.

Aliens: Colonial Marines begins with an ostensibly abandoned ship, the U.S.S. Sulaco, recovered in orbit around LV-426. Players lead a group of highly trained United States Colonial Marines as they board the deserted craft to uncover the fate of the crew. They will have to fight to survive unspeakable horrors and their own anxieties as they chase down the truth behind a galaxy-spanning deception that places humanity at the mercy of the most murderous and deadly species in the universe. Aliens: Colonial Marines features authentic environments, such as the surface of LV-426 and Hadley’s Hope, weapons inspired by the film series and is designed to provide an exhilarating and engaging new chapter in the Aliens universe.