The third episode has been released for Halo 4: Forward Unto Dawn.
Halo 4: Spartan Ops Extended Behind the Scenes
343 Industries and Axis Animation talk about creating the unprecedented Spartan Ops content for Halo 4.
Halo 4: Spartan Ops - Episode 8 Trailer
A trailer is out for episode 8 of Halo 4: Spartan Ops.
Halo 4 - Concept Art Trailer
There is some inspiring scenery in this concept art trailer for Halo 4 from 343 Industries.