UPDATE DEC 13: Click here for more info on the requirements to download
The Halo 4 Crimson Map Pack was released December 10th for individual purchase (800 MS points) or to owners of the War Games Map Pass (LE owners included). Unfrotunately due to some errors, War Games Map Pass owners had technical difficulties downloading the DLC on December 10th.
They have stated that Map Pass owners will not be reimbursed as the issue was resolved later that day (December 10th), but they have released the Map Pack for “free”, temporarily.
You can go download the map pack for free via the in-game marketplace (while you’re in the Halo 4 in-game menus). The map pack will be free till December 18th, but afterwards you will have to pay.
Think of it as a Crimson Map Pack Demo till December 18th. So go test out the maps if you don’t have them, and then decide if you want to purchase them December 18th.
– Chief Landless