Sorry if old. Cold Storage aka Chill out is the first map (from what I know) to be shown to the public from the new Map pack. Bungie used the MLG San Diego event to show off the work in progress map for the first time. Gallery. MLG Gallery | Major League Gaming Word.
Ahem, http://www.forgehub.com/forum/halo-discussion/14628-cold-storage-chill-out-remake.html No offense to you, but I'm gonna lock this cause theres already a pretty in-depth discussion goin on about it.