Some of the things brought to light during the interview are black holes. Through these black holes, they also simulate the creation of stars and planets. A galaxy can have well over a hundred thousand planets, which gives little point to having multiple galaxies, as a player would never be able to check them all out anyway.
A sort of "friends" feature when it comes to downloading is also briefly discussed. With that you'd be able to download creatures by a specific player. As for customisation, almost anything is customisable. From creatures to cities to vehicles (including the UFO) as well as the plants. You need to research genetic engineering to be able to design your own plants. Creatures can also fly, but cities can't.
Diplomacy is also entered more deeply. At the moment you encounter another species, you will not understand their language. Instead you'll have to do some interacting with them, and so find out what they are like, and how they feel about you. After playing a "Close Encounters" game you may be able to develop a basis for shared language. Depending on how you play the game, either friendly or just blowing everything up or something in between, you get some meta goals similar to the Sims 2. You can follow or ignore those. In the end your creature will be the intelligent one, but as the culture of species differ there will be conflicts.
Read the full transcript for more in-depth details.