Stardock has announced plans to expand Sins of a Solar Empire before the end of this year with an expansion called Entrenchment, reports Joystiq. There's not much detail on the space strategy add-on, which will presumably be rather small based on its $9.99 price tag. Here's word: ""Entrenchment promises to bring fans a Starbase defense platform for each race (extremely powerful and armored bases housing a variety of weapons and other upgrades capable of defending an entire planet), turret upgrades for each race to make them more powerful mine fields and a Subspace Inhibitor platform that will slow enemy ships within its range." In related news, there's a Q&A with Stardock's Brad Wardell and Gas Powered Games' Chris Taylor on Gamasutra with an in-depth discussion of the new Impulse platform, and the future of game publishing. They also mention the new "gamer's bill of rights," reproduced in the next story.