Download codes for the campaign of Halo 3: ODST are now being sent to qualified owners of Halo: The Master Chief Collection.
343 Industries made the official announcement in an update on Halo Waypoint. “Our latest content update is now available,” said Community Manager Andy Dudynsky. “Additionally, download codes for the Halo 3: ODST Campaign have begun to roll out to qualified players.”
Additionally, a matchmaking update is now live, adding another remade Halo 2 multiplayer map, Remnant, plus two more game modes: Team Doubles and Big Team Battle.