Series 4: Reclaimer

Season 4 will be the fourth season released for Halo: The Master Chief Collection. It will feature new customisation items for Halo 3 and Halo: Reach, including "a long-lost item or two". Halo 3's items will take cues from the customisation added to Halo: Combat Evolved in Season 2: Spark, while Halo: Reach will feature more options for mix-and-matching armour pieces and provide customisation options for Elites that were previously exclusive to Spartans. The season will also contain "a couple of surprises".

The update will feature "a long lost item or two" for Halo 3 and Halo: Reach - it is possible these pieces of content may include the Halo: Reach cut PRESERVE ("GRD") and CONDEMNED armor sets, which 343 Industries have expressed interest in adding into the collection before.