IGN PC has published a brand new hands-on preview of Sins of a Solar Empire, based on a late build of the game. In this new article, they reveal the mysterious and powerful Advent, the Achievements system and much more, "The new Advent race are perhaps my favorite race so far, mostly because they have such an interesting attitude and aesthetic."
You can read the entire article at: http://pc.ign.com/articles/848/848665p1.html