Halo Infinite campaign co-op, Forge, delayed to winter - Polygon

Halo Infinite’s co-op campaign and Forge map editor are delayed again. So is season 3 of Halo Infinite multiplayer. Co-op and Forge are expected on Nov. 8, when the game’s winter update period begins, and Forge’s release is beta only, 343 Industries said on Sept. 1.

Halo Infinite adds co-op, Forge Open Beta, mission replay in November - Polygon

Halo Infinite Forge Mode Gets November Release Date, But Split-Screen Co-op Cancelled - IGN

Halo Infinite's 'biggest update yet' finally adds campaign co-op and the Forge

Halo Infinite Forge Delayed 6 MONTHS and Coop Campaign Not At Launch!

Halo Infinite Campaign Co-op and Forge Mode Releases Pushed Back - IGN