A new report by Rebs Gaming notes that the mode is akin to "Super Big Team Battle," though whether it's standalone remains unknown.
Plans have seemingly changed, and rumored developer Certain Affinity is now looking at making the title more like Halo 5's Warzone mode.
Remakes for Halo 2 and 3 are also reportedly in early development on Unreal Engine 5, with alleged teases appearing in Campaign Evolved.