The first episode of Halo 4: Forward Unto Dawn has been released.
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.
Szymon Biernacki's Concept Art for Halo 4: Spartan Ops
Here's some of the concept art work created by Szymon Biernacki for Halo 4: Spartan Ops.
Halo 4 - Concept Art Trailer
There is some inspiring scenery in this concept art trailer for Halo 4 from 343 Industries.