http://www.bungie.net/News/content.a...news&cid=12324
Really isn't Halo 3 related, but Bungie will be releasing 2 new maps for Halo 2 on April 17th, called Desolation and Tombstone. Also, if you notice, I think the map name is Tombstone, but anyway, it's really a recreated Hang Em' High from the first Halo.