We propose a second version of the trailer Official Halo 4 which has small differences: the main one is undoubtedly the music which is more pronounced and melodic than the version chosen for the 'E3, also the ending of the video shows Master Chief throw away the gun that picks up chat in the first trailer shown at the fair in Los Angeles. You can view it below.

Halo 4 - Halo 4 Directors Cut