It has now been announced that the Halo: Reach beta will start on May 3.

Here’s Microsoft’s official statement.

As the blockbuster prequel to the best-selling Xbox franchise of all time, developed exclusively for Xbox 360 by acclaimed developer Bungie, “Halo: Reach” puts you front and center in the fateful moments that forged the “Halo” legend. As part of Noble Team, a squad of heroic Spartan soldiers, you will be called upon to defend the planet Reach, humankind’s last line of defense between the terrifying Covenant and Earth. Starting on May 3, the “Halo: Reach” public multiplayer beta will give you the opportunity to drive the latest advancements in multiplayer gameplay in the blockbuster franchise that started it all on Xbox LIVE. Access to the beta will be available through the “Halo 3: ODST” game disc on Xbox LIVE.