Here it is .Post your opinions below . The trailer is epic I guarantee it .
http://www.youtube.com/watch?v=V-GzfNgUVHo&oref=http%3A%2F%2Fwww.youtube.com%2Fresults%3Fsearch_type%3Dvideos%26search_query%3DHALO%2B4%2C%2Btoday%26search_sort%3Dvideo_date_uploaded
:OOOOOOOOOOOOOOOOO