• Specializations
Everyone will have access to select Specializations, but those that purchase the Halo 4 Limited Edition will receive the ability to unlock six Specializations early, available at launch on Xbox LIVE. You can use them, one at a time, to achieve higher ranks in your Spartan career. In addition to gaining access to new ranks, Specializations unlock new customization options. We’ll be releasing more information about Specializations at E3, so expect additional details about this particular feature then.
^kinda an unfair advantage is you ask me.