If you are not in the roster currently follow the link to sign up for it - http://goo.gl/1fGwjYBy being in a Call of Duty®: Ghosts Clan, you can look forward to:
Clan management functionality both in-game, and in the new Call of Duty® app
Clan-specific playlists in Call of Duty®: Ghosts
The all-new Call of Duty® Clan Wars game experience via the new Call of Duty® app
A new Clan leveling system which offers players more ways to gain Clan XP
Exclusive Clan unlocks and multiplayer XP bonuses
This year also introduces cross-platform Clans, allowing players to create and/or join a single Call of Duty®: Ghosts Clan across the following platforms: Xbox 360, PlayStation®3, Windows PC, and when available, Xbox One and PlayStation 4.
The Call of Duty®: Ghosts Early Clan Registration starts Thursday, October 10, 2013 at 8:00 a.m. PDT and lasts through Friday, October 25, 2013 at 11:59 p.m. PDT.
As part of the Call of Duty®: Ghosts Early Clan Registration, Call of Duty® Elite Clan Leaders have the opportunity to reserve their current Call of Duty® Elite Clan Name as their new Call of Duty®: Ghosts Clan Name on a first-come, first-serve basis. Clan Leaders will also have the ability to automatically copy over their entire Clan Member roster, or pick and chose specific Clan Members they wish to carry over to their new Call of Duty®: Ghosts Clan.
Existing Call of Duty® Elite Clan Members may be automatically copied over from their current Call of Duty® Elite Clan to the new Call of Duty®: Ghosts Clan by their Clan Leader. Additionally, Clan Members have the choice to stay in their new Call of Duty®: Ghosts Clan with their current Clan Leader, or leave the Clan to either start their own, or join a different Call of Duty®: Ghosts Clan.