One of the nice things about being an indie title that isn't incredibly mainstream is that you can do things that wouldn't necessarily appeal to the casual player.
For instance, the expansion pack for GalCiv II has gotten its features, story, plot, etc. mapped out now. We'll talk about that more soon.
But it will contain a campaign and it will be dark. Very dark. Two of the major civilizations in GalCiv II will be wiped out. Eliminated. You'll still be able to play them in GalCiv II but come GalCiv III, they won't exist. Eradicated. Individuals of the two races may still exist and show up in GalCiv III but as playable races, their histories will come to an end.
Two new civilizations will be introduced in the expansion pack which will have the native ability to make use of planets that the others can't use without research (the expansion will introduce the concept of special planet types that can't be colonized until you've researched the appropriate environment technology). A third civilization will be added too which will act as the main villain (well, of course the Drengin are villains too but, well you'll see).
And if you think the blood thirsty Drengin are bad with their desire to enslave all the galaxy as "slavelings", there are worse things than the Drengin and we're not talking about the Dread Lords.