Halo 5: Guardians has a day one update that weighs in at a massive 9GB, containing the Warzone multiplayer mode and map content for the Arena multiplayer mode.As previously revealed, you’ll be able to download the update before Halo 5 goes live. Set your Xbox One to “Instant On” and if you’ve pre-downloaded Halo 5 then you’ll automatically download the update on October 22nd, ahead of the game’s October 27th launch.In addition to this, developer 343 Industries has outlined Halo 5’s clan support, which comes in the form of something called Spartan Companies. Give the trailer below a look for the full details. https://www.youtube.com/watch?v=635QD9Io-yI