Here is the second CG episode created for Halo 4's Spartan Ops.
Halo Nightfall - First Trailer
The first trailer is out for the Halo Nightfall movie.
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.