Halo Campaign Evolved is set for release on 28 July 2026, with players able to unlock up to five days of early access depending on which edition they purchase. The staggered launch matters for anyone planning to jump in as soon as possible, since access depends on paying extra for premium tiers rather than simply owning the game.

Standard Edition owners and those playing via Game Pass must wait for the official 28 July launch, while the Premium Edition ($69.99) and the regionally-limited Collector's Edition grant entry up to five days earlier. Early access begins at 8am PDT/11am EDT/4pm BST. The Premium Edition also includes the Alpha Halo Armory Pack, featuring five Master Chief skins and eight weapon skins, with pre-orders adding the Foundry Armory Pack for further cosmetic customisation.