I know that we will have to buy the DLC maps eventually, unless you buy the LE version now.
Buying the DLC maps later, is called the War games pack? And that will also come with the 2 helmets, correct?
When is one able to buy the War games map pack, if they do not get it with LE?
Thank you for your help guys.
I’m guessing when the game releases.
this whole thing has my head hurting
It could be available for preorder check your retailers site.
Found the answer. 
“Retailing for $24.99 USD2 (2,000 Microsoft Points), the “Halo 4” War Games Map Pass confirms your access to three War Games map packs as they become available in December, February and April, and represents a savings of more than 15 percent versus purchasing the packs individually. In addition, Map Pass purchasers will receive two bonus in-game helmets, as well as a unique in-game emblem.”