Ironclad and Stardock are teaming up once again on the second micro-expansion pack for Sins of a Solar Empire .  Dubbed, Sins of a Solar Empire: Diplomacy, the new micro-expansion pack will vastly increase the amount of diplomatic options available to players in the game and help make forging good relations with other empires a major option for would-be galactic conquerors. The beta is due out this Fall with the general release Winter 2010.