Gears of War 3 Multiplayer Beta if you Pre-Order from GameStop
If you pre-order Gears of War 3 from GameStop, you will have the opportunity to be a part of the Gears of War 3 multiplayer beta starting April 25 and ending on May 15. Either pre-order the Standard Edition, the Limited Edition, or the Epic Edition and the beta code is yours.
Also, if you got the Bulletstorm: Epic Edition, you will already have a beta code that gives you early access to this multiplayer beta (April 18-April 24).
Head on over to the GameStop website for more details.

Gears of War 3 Multiplayer Beta if you Pre-Order from GameStop

If you pre-order Gears of War 3 from GameStop, you will have the opportunity to be a part of the Gears of War 3 multiplayer beta starting April 25 and ending on May 15. Either pre-order the Standard Edition, the Limited Edition, or the Epic Edition and the beta code is yours.

Also, if you got the Bulletstorm: Epic Edition, you will already have a beta code that gives you early access to this multiplayer beta (April 18-April 24).

Head on over to the GameStop website for more details.