The seventh episode of Halo 4: Spartan Ops is shaping up to be an action packed one, according to this trailer.
Halo 4: Spartan Ops - Episode 5
Here is the fifth CG episode of Halo 4: Spartan Ops, created by Axis Animation.
Halo 4: Forward Unto Dawn - Episode 2
Here's the second episode of Halo 4: Forward Unto Dawn.
Making Halo 4 - Part 1 and 2
Join 343 Industries on a 20 minute behind the scenes featurette on the creation of Halo 4.