Unlike previous games in the series, this game reveals the face of Master Chief, however, his eyes are remained concealed under shadow; this can only be seen if the player beats Halo 4 on Legendary difficulty.
Before developing Halo: Reach, Bungie was considering to develop this game, but they dropped out because they wanted to work on their new game (Destiny) with Activision.
Halo 4 is the first official Halo game to be developed by 343 Industries.
Rooster Teeth Productions does two Halo themed shows, Red vs Blue and Halo Reach Fails of the Weak. The first episode of Fails of the Weak that they confirmed the first use of Xbox Live user's Halo 4 fails is episode number 117 which is Master Chief's Spartan number.
Halo 4 was announced at E3 as the first part of a new Halo "Trilogy" so technically it was announced the same day Halo 5: Guardians and Halo Infinite were.