Here is the second CG episode created for Halo 4's Spartan Ops.
Halo 2 Anniversary - Cinematic Launch Trailer
Here is the cinematic launch trailer for Halo 2 Anniversary, featuring CG by Blur Studio.
Halo 4 - Terminal Trailer
A new trailer has been released for Halo 4, from 343 Industries.
Halo 4 Trailer VFX Breakdowns by Method Studios
Method Studios do VFX breakdowns of several scenes from their recent cinematic trailer for Halo 4.