Stardock has announced that preorders are now being taken for the upcoming micro-expansion for Sins of a Solar Empire entitled Diplomacy. The DLC adds faction status and trade pact options within the game, as well as the ability to issue new missions to other players. The biggest addition is a brand new diplomatic skill tree which adds over thirty technologies.
Diplomacy will only set you back $10, and if you pre-order now you can get yourself into the beta when it launches soon. Sins of a Solar Empire supports a variety of four player configurations in co-op, and DLC looks to add more missions perfect for conquering the galaxy with a friend.