The lights are on
Looking to play the first expansion to The Elder Scrolls V: Skyrim early? Bethesda is launching a beta for Dawnguard on Xbox 360.
Visit DawnguardBeta.ElderScrolls.com to apply. Bethesda says applicants need a registered account on its official forums. Applicants will be selected in the next week. If you're accepted, you'll get an Xbox Live code to redeem Dawnguard.
The beta is the full version with achievements, so if you participate in the beta you will not have to buy Dawnguard.[Source: Bethblog]