Series 7: Elite

Season 7: Elite is a planned upcoming season for Halo: The Master Chief Collection, anticipated to release on June 23, 2021. As of December 2020, plans had been laid internally at 343 Industries for this season. This season will notably include long-awaited additions to Elite-focused armor customisation in Halo 3, in the form of seven new harnesses, alongside the four Champions Bundle armors from Halo 4. It is possible that this season will feature OPERATOR-class Mjolnir and other Halo Online armor sets, which have been seen in the trailer for Season 5 but not yet featured as an unlock in Season 5 or Season 6.

In addition to the new customization content, Season 7 will also introduce changes to the classic Halo: Combat Evolved graphics to better reflect the original Xbox version of the game, rather than the 2003 PC port which introduced many graphical issues. Furthermore, the season will also feature improvements to the Halo Online maps Waterfall and Edge, which have been added to Halo 3, and general bug fixes.

The Master Chief Collection's Custom Games Browser, which had previously been briefly tested publicly on retail will launch this season, with support for Halo: Reach. Players will now be able to host their own matches available to the public. Other games are planned to be brought to the Custom Games Browser at a later date.

Season content
The following is due to be implemented in Season 7:

Halo: The Master Chief Collection

 * Halo 3: ODST ' s and Halo: Reach ' s Firefight will be added to the Match Composer; Crossplay will be also enabled in both Firefight modes.

Halo: Combat Evolved

 * 10 new vehicle skins
 * 5 for the Warthog
 * 5 for the Rocket Warthog
 * Several graphical improvements to bring the version of the game featured in The Master Chief Collection (based on the Gearbox PC port) up to visual parity with the original Xbox release. See here for a list of some of the visual differences between various iterations.
 * Additional mod support more akin to Halo: Custom Edition.

Halo 3

 * Seven new Elite armor permutations:
 * Keepward
 * Accord
 * General
 * Seneschal
 * Scion
 * Ossoona
 * Artisan


 * 7 new weapon skins and 4 new vehicle skins:
 * 7 for the Energy Sword
 * 3 for the Warthog
 * 1 for the Gauss Warthog


 * Seven new techsuits
 * GEN2 Tinted Smoke
 * GEN2 Umber
 * GEN2 Army Green
 * GEN2 Burnt Ground
 * GEN2 Cold Mud
 * GEN2 Purplex
 * GEN2 Slate Grey

Halo: Reach

 * Custom Games Browser support

Halo 4

 * Six armor effects originally from Halo: Reach
 * Birthday Party
 * Heart Attack
 * Pestilence
 * Inclement Weather
 * Legendary
 * Eternal
 * Four armor sets originally featured in the Champions Bundle:
 * Mark V
 * Ricochet
 * Prefect
 * ODST
 * 16 new weapon skins previously cut from Halo 4, or only available exclusively via Halo 4 Series 2 figurines.
 * 2 for the Assault Rifle
 * 3 for the Battle Rifle
 * 4 for the DMR
 * 1 for the Storm Rifle
 * 1 for the Carbine
 * 1 for the Suppressor
 * 4 for the Magnum
 * Mark VII helmet featured in Halo Infinite

Flights
Flighting for Season 7 began on May 21, 2021. The Flight was designed to test Season 7 content in new features. At the Flight's start, available content included;
 * Several new Halo 3 Elite harness permutations.
 * A new multiplayer maps for Halo 3, originally from Halo Online.
 * Edge
 * Several new Halo 3 skins for the energy sword.
 * Several new Halo: Combat Evolved skins for vehicles
 * Four Halo 4 armors previously available on the Xbox 360 version but not on the MCC
 * Several Halo 4 weapons skins, previously cut from Halo 4 or only available exclusively via figurines.
 * Graphical improvements on Halo: Combat Evolved to bring it closer to the Xbox version.
 * Armor effects for Halo 4.


 * Gameplay content
 * Campaign
 * Missions: The Pillar of Autumn, The Truth and Reconciliation, The Silent Cartographer, Assault on the Control Room, 343 Guilty Spark


 * Halo : Combat Evolved Multiplayer
 * Maps: Sidewinder (8v8), Damnation (2v2, 4v4), Prisoner (2v2, 4v4), Hang ‘Em High (2v2, 4v4, 8v8), Chill Out (2v2, 4v4), Blood Gulch (8v8)


 * Halo 3 Multiplayer
 * Maps: Construct, Guardian, Last Resort, Narrows, Sandtrap, The Pit, Valhalla, Foundry, Standoff, Avalanche, Sandbox, Heretic, Waterfall, Edge


 * Halo 4 Multiplayer
 * Maps: Adrift, Exile, Haven, Longbow, Meltdown, Ragnarok, Impact, Landfall, Skyline, Perdition, Pitfall

Menu artwork trailer
On June 15, 2021, a trailer known as Battle The Heretics was released on YouTube Twitter to announce the release date of Season 7 and showcase the menu background for the season, depicting a Type-26C Banshee in keeping with the Sangheili theme of the season. The video is accompanied by some voiceover of pilots of the Anvil Initiative's Union Wing.