Developer 343 Industries and publisher Microsoft are getting ready to launch a new free content update later this month for Halo 5: Guardians. The next update for the Xbox One shooter is called Infinity's Amory and includes quite a bit of new content to try out.
Long time Halo fans will get to use the classic Battle Rifle from Halo 2 when Infinity's Amory is released. It wil also add two new multiplayer maps: Riptide for Arena matches and Urban for Warzone Assault games. There will also be some new Carbine variants, the Achilles Armor Set, new assassinations to use and new skins for your weapons (Yes, as shown in the trailer, one of them displays pizza on a weapon).
Source: Halo Waypoint