| 27 January 2025 | People Can Fly announced as co-development partner alongside The Coalition. | People Can Fly's own announcement |
| 7 June 2026 | Release date revealed at the Xbox Games Showcase, followed by a dedicated E-Day Direct with extended gameplay. Pre-orders open. Xbox states it is an Xbox console exclusive. | Xbox Wire; press reports |
| 30 July 2026 | Multiplayer deep dive and trailer: Versus modes and maps, Horde Siege, classes, progression, seasons. | Xbox Wire, gearsofwar.com |
| 6 to 10 August 2026 | Open beta weekend one, for pre-orders on Xbox Series X|S or Steam and for Game Pass Ultimate and PC Game Pass members. 12pm Pacific to 10am Pacific. | gearsofwar.com's beta FAQ; press reports |
| 12 August 2026 | Limited edition E-Day Xbox Wireless Controllers announced, with pre-orders open at $89.99. | Xbox Wire |
| 13 to 17 August 2026 | Open beta weekend two, for everyone on every eligible platform, with the same content as weekend one. | gearsofwar.com's beta FAQ |
| 25 August 2026 | Campaign hands-on previews published, covering the opening of Act 2. | Xbox Wire and press previews |
| 4 September 2026 | Official Xbox Podcast episode on the campaign with Matt Searcy and Raul Figueroa. | Xbox Wire |
| 17 September 2026 | The game goes gold. Final PC specifications published. | Xbox Wire |
| 29 September 2026 | Pre-install opens, 8am Pacific and 15:00 UTC, on Xbox Series X|S, Xbox on PC and Steam. | Xbox Wire |
| 30 September 2026 | Emergence launch event in Los Angeles, the day before early access. | Xbox Wire |
| 1 October 2026 | Early access opens for Premium and Collector's edition owners, at 8am Pacific, 15:00 UTC. A day-one patch fixes launch errors, a 'You're Too Early' message and missing Premium content. Season 1: Emergence begins. The reviews go out. | gearsofwar.com; Xbox Game Studios shop; patch summaries |
| 5 October 2026 | A patch for stability and performance. It also stops players who join a campaign in progress from getting the War Journal progress found before they joined. | Patch notes |
| 6 October 2026 | Worldwide launch at 8am Pacific, 15:00 UTC, and day one on Game Pass Ultimate and PC Game Pass. | xbox.com, Xbox Wire |
| 13 October 2026 | Versus Ranked opens, one week after launch, with Team Deathmatch, Conquest, Demolition and Crucible. | gearsofwar.com |
| 14 October 2026 | A large patch: War Journal, achievement and co-op progress that failed to track now tracks, but collectibles and campaign rewards lost that way are not handed back; a setting to mute the collectible chimes; ranked placement fixed. | The Coalition's patch notes on Steam |
| 22 October 2026 | A hotfix for crashes and stability, four campaign bugs (Act 2 Chapter 2, Act 3 Chapter 3, Act 4 Chapters 2 and 4), Horde Siege's Close E-Holes objective and server kicks, and Versus: Ranked dissolving too early, an unreachable Demolition bomb and the Killjoy ribbon. Pure Xbox, Twisted Voxel, games.gg and Xboxygen date it 22 October; DSOGaming reports the same notes on 26 October as the October 26th Update. | The Coalition's notes as reported by Pure Xbox, Twisted Voxel, games.gg, Xboxygen and DSOGaming |
| 7 November 2026 | The series' 20th anniversary: The Coalition promises a birthday gift for every E-Day player. | gearsofwar.com |
| 1 December 2026 | Season 1: Emergence ends. | gearsofwar.com |