The massive open multiplayer beta for Call of Duty: Modern Warfare 4 officially concludes today, September 1, at 10:00 a.m. Pacific Time. The worldwide public test gave millions of players across PlayStation 5, Xbox Series X|S, PC, and Nintendo Switch 2 hands-on access to multiplayer combat, omnidirectional movement, and new weapon mechanics.
Throughout the testing period, lead developer Infinity Ward gathered high-volume telemetry and deployed live balance patches addressing weapon TTK, slide recovery frames, and respawn distribution. Players also sampled the single-player campaign mission 'Entrenched' and tested the new coastal Zodiac Resurgence map in Warzone.
With beta servers wrapping up, feedback now funnels directly into final balancing ahead of the game's commercial October launch. Follow competitive esports breakdowns on [/news](/news) and track game release dates via [/release-radar](/release-radar).
Key Takeaways & FAQs
- Category: Call of Duty.
- Date: September 1, 2026.
- Source: Infinity Ward / Activision.
Q: What exact time does the Modern Warfare 4 open beta end? A: The beta wraps up today at 10:00 a.m. Pacific Time (1:00 p.m. ET / 6:00 p.m. BST).
Q: Which platforms participated in the MW4 open beta? A: The open beta featured cross-play across PlayStation 5, Xbox Series X|S, PC, and Nintendo Switch 2.