The beta concludes on May 15th, but won't do so without featuring three new modes, four maps and numerous unlockables (Beta Tester Medal, Thrashball Cole, Gold - Plated Retro Lancer, Flaming Hammerburst, Flaming Lancer, Flaming Sawed - Off Shotgun,
Flaming Gnasher Shotgun) which will barry on to Gears of War 3 when it launches later this year, in September on Xbox 360 only.