The September New Frontier Pack DLC drops on September 24, adding Gaul and Byzantium as major civilizations, along with a new Dramatic Ages mode, and two world wonders – the Statue of Zeus and the Biosphere. The Dramatic Ages mode includes cities rebelling to free cities upon entering a dark age, the severity scaling with game difficulty level. More information is in the developer update below; details on the new civs are expected in the next week. Join the discussion of this DLC in the forums.