The eighth CG episode is out for Halo 4: Spartan Ops.
Halo 2: Anniversary - Remaking the Legend
See how 343 Industries have remade the legend of Halo 2 in this documentary video.
Halo 4 Spartan Ops - Episode 2
Here is the second CG episode created for Halo 4's Spartan Ops.
Halo 4 - CG Intro
Digic Pictures have created this CG intro for Halo 4's single player campaign.