Citadel

Looking for the Citadel, the Forerunner building, or the Covenant Citadel featured in Halo Wars?

Citadel may be an upcoming Halo 3 map that will be included in the Mythic Map Pack. No specific release date has been confirmed yet, however this map is expected to be released with Assembly, Sandbox, Orbital, Longshore, and Heretic in the Mythic Map Pack"...in early 2009. “Winter,” as they say." - Lukems in the 10/10/08 weekly update. It may also, with Heretic and Longshore, come out with Halo 3: ODST, as Bungie said there are going to be new multiplayer maps released along with it.

Skull
This map has a skull for the multiplayer achievements. When found it unlocks the achievement, Citadel Skull. It has an image on the skull that resembles the Citadel in the Campaign level, The Covenant.

Trivia

 * This map is rumored to be a Forerunner map because of the Forerunner symbol on the Citadel Skull achievement.
 * This map could be based on the end of the level The Covenant as where Truth, attempts to activate the Halos because it's called "The Citadel", but may be a re-modeled "Citadel" instead, there is a good chance of this because of the numerous shotguns on that level.
 * It is possible this map will not ship with the Mythic Map Pack in February.
 * This may also be another map similar to Construct, but due to the Shotgun Spree achievement, it may be more of a close-quarters map.