I started playing the Beta 3 today. Created a new game and once I get in to a new game, there are no habitable planets. I set the Habitable Planets to Common, but still, nothing besides the habitable planets available by default in each species home system.
Started another game, got the same issue. Not entirely sure what the Devs might want, in terms of how I setup the game, I can get that info to them as it seems to be an issue I can replicate.
Also, the artwork/background disappears when selecting the Galaxy setup options during a new game setup.