Bungie have done a lot over the past few weeks to get people to fish out their copies of Halo 3, and I'm certainly buying what they're selling.

Amongst the numerous announcements they've made to celebrate Halo 3's  1st birthday, a teaser trailer for an allegedly new campaign has been released. 

 At the moment the details are sketchy, which is why this is a teaser and nothing more.  Could it be the real ending to Halo 3 that so many people felt was unfinished? Only time will tell.