You may have heard of a little game called Halo 3 released from Microsoft from Bungie for the Xbox 360? Anyways there are soon to be released brand spanking new multiplayer maps entitled Ghost Town, Avalanche and a third as yet unnamed map with scarce details to be found on that one. There's a whopping 69MB trailer to be found over at the Team Xbox site. The pack will be released on April 15th. You can check out the trailer here.