It will have a scientifically based galaxy with rotating an orbiting planets which I think is very important in a space game like this, it also features a mass multi-player dynamic galaxy.
It's shaping up nicely as you can see from the newsletters http://us2.campaign-archive2.com/home/?u=dcbf6b86b4b0c7d1c21...
and youtube channel http://www.youtube.com/user/FrontierDevelopments/videos