Posting via
his blog, YLA G, who is a member of the Xbox Elite Team in Belgium has said that a new Halo 3 video is coming to the Marketplace on December 20.
On December 20 a new Halo 3 video will be available on marketplace. It’s a 7 minute video that will be released next week. It highlights the emergence of the Brutes as playable characters in the game. It touches on their skills, origins, and how they are being created. It has about 2 ½ minutes of gameplay footage.News of another Halo 3 video coming is great (we're still recovering from the commercial just released), but until we hear from some more well known sources, we'll keep this classified as a rumor for now. Others have also displayed some discontent at the possibility of playing someone other than Master Chief for the single player campaign, with which we would have to agree. However whether the words "playable characters in the game" mean the former, or simply that they are choosable in multiplayer or co-op gameplay remains to be seen.
Thanks to udgamer for the tip