Microsoft's E3 Conference just finished minutes ago, with the reveal of the first teaser trailer for Halo 4.
The video takes place directly after the end of Halo 3's secret ending, as a cryogenically-frozen Master Chief is awoken by AI Cortana (in a scene that flicks through the Spartan's organs as they restart), as their ship is destroyed by forces unknown.
Using his suit's in-built anti-grav jets, Chief blasts through the destruction, using a trusty pistol and grenade launcher to dig his way through until he lands in the front-half of the ship. The camera pans round to show the planet they were drifting towards at the end of Halo 3, a massive complex on its surface opening up, perhaps dragging the ship, and them - in.
The game's due for release holiday 2012. We'll have the trailer and screens uploaded as soon as we get them.