Microsoft Game Studios has released lots of Halo 2 concept art and screenshots, showcasing the two new downloadable maps which will be available as premium downloadable content for Xbox and Xbox 360 on April 17. Developed by Bungie and Certain Affinity Inc., these maps, Hang ’Em High (renamed as Tombstone) and Desolation, are new, improved and redesigned remakes of fan favorites from the original Halo: Combat Evolved.