Specializations: Receive early access to six Specializations, available at launch on Xbox LIVE, and 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.
http://www.gamestop.com/xbox-360/games/halo-4-limited-edition/102028
That is what the link says about the Limited edition. Now my problem is that i can not use the specializations at all this is a real problem because it was one of the reasons I decided to buy this edition. Can someone get back to me and let me know what can be done about this thank you.