They might be using improved tech for shadows in the trailer for the Orbis station. I think they looked significantly better in that trailer (along with the improved detail on the station itself) Then again the trailer could be pre-rendered using in game assets and we'll never see those shadows in game.
Edit: Here's that trailer, Shadows look better to my eyes but still not out of this world, which leads me to believe that these may well be in the next build. https://www.youtube.com/watch?v=ex2nGIvbiVI