Originally Posted by gunnergirl
Yes, it is.
And if you haven't gotten the email in the address you have linked to your gamertag, check alternate emails (parent accounts). Some people have been getting them there, and apparently all of the codes have been sent out now.
Also, this promo did not go out if you are registered with Xbox LIVE in Europe, the Middle East or Africa.
How can you confirm all the codes have been sent out now? I've not received mine yet and only have my GT linked to one email address.