It shows up as an add on the right side of bungie forums. Well for me on the bungie forums. You click the add and it brings you to different wallpapers.
have any of you noticed? Bungie told us to expect delays. in the famous quote from everyones favorite Star wars character... ITS A TRAP
Regardless of what's going on over at Bungie, I say "hey uhhh **** you Buddy!" to Microsoft. Sometimes I wish Bungie was on a different platform.