D3 Publisher has a new Earth Defense Force game in the works and it’s not a port or a spin-off. Earth Defense Force 4 was announced in Famitsu as a PlayStation 3 and Xbox 360 game. It will support online play for a number of people and is slated for release sometime in 2013.
Earth Defense Force 3 Portable adds in four player co-op with new support weapons for PlayStation Vita. D3 Publisher has this game scheduled to come out on September 27.