Here are the first screenshots and details for the three upcoming exclusive maps for Halo 3: ODST. First up we have Heretic, a Halo 2 remake of everyones favorite, Midship, the next new map is Citadel, a small Forerunner base that will keep players in close quarters and on their toes, and last one is Longshore, a large scale map filled with abandoned buildings. Check the screens out after the jump!