The third episode has been released for Halo 4: Forward Unto Dawn.
Stuart Aitken from Axis Animation Talks Halo 4's New Spartan Ops CG Episodes
Axis Animation's Stu Aitken talks about leading the production of the Halo 4: Spartan Ops CG episodes.
Halo 4: Spartan Ops - Episode 5
Here is the fifth CG episode of Halo 4: Spartan Ops, created by Axis Animation.
Making Halo 4 - Part 1 and 2
Join 343 Industries on a 20 minute behind the scenes featurette on the creation of Halo 4.