The wait for the Halo 3 online beta is almost over -- qualified players will be able to download the game on May 16. Fresh from the Gamerscore blog:

Microsoft Game Studios and Bungie Studios today confirmed the multiplayer beta of "Halo® 3" will debut to audiences worldwide via Xbox LIVE® on May 16 at 5 a.m. PDT and run through June 6 at 11:59 p.m. PDT. Coming exclusively to the Xbox 360™ console this fall, "Halo 3" is the highly anticipated third chapter in the groundbreaking "Halo" trilogy from legendary developers Bungie. "Halo 3" lets gamers experience Master Chief's greatest battle as he launches an epic mission to stop the Covenant, destroy the impending Flood threat and ultimately save mankind.