Here is the second CG episode created for Halo 4's Spartan Ops.
Cki Vang's Art for Halo 2 Anniversary
Check out some of Cki Vang's work for the CG cutscenes for Halo 2 Anniversary.
Halo 4: Spartan Ops - Episode 4
The fourth CG episode is out for Halo 4: Spartan Ops.
Halo 4 - CG Intro
Digic Pictures have created this CG intro for Halo 4's single player campaign.