first if you havnet seen the trailer, view it here...http://www.bungie.net/News/content.aspx?type=topnews&cid=15574
next. what do you think it willl be, to me it may be the graw- halo game rumored, it is definatly in the halo universe thats foir sure, but what could it be, i persoanly think it will be u playing as a odst and being the commander of a squad of odst's. whats your thoughts. oh and the things at the begining look like odst drop pods so i figured that my theory make sense??