The third episode has been released for Halo 4: Forward Unto Dawn.
Polynoid's VFX for Halo 4: Forward Unto Dawn
Check out Polynoid's beautiful VFX work for Halo 4: Forward Unto Dawn's opening.
Making Halo 4 - Part 1 and 2
Join 343 Industries on a 20 minute behind the scenes featurette on the creation of Halo 4.
Halo 4 - Composing Worlds
This developer video for Halo 4 shows how the musical score was created for the upcoming sci-fi game.