Bungie have launched a new teaser trailer on their website for an expansion which will soon be released on Xbox Live.

The trailer shows a futuristic environment with  burnt out cars and a gun. If it wasnt for the Xbox Live Marketplace Description which hints at a new Halo 3 Campaign then it would be difficult to know what it was for.

You can view the trailer for yourself by visiting http://www.bungie.net/News/content.aspx?type=topnews&cid=15574. Oh and don’t forget to let us know what you think.