Complete system info no, but they do have confirmation of the ones they have found, those will exist once you get there to view them. Some even are able to have an element of their atmospheres detected using light colour analysis! We've come along way since even FFE was released (no confirmed exoplanets), and i'm sure David has been keeping up with all this, i suspect he is a fan of astronomy.
http://en.wikipedia.org/wiki/Exoplanets
So yeah as the OP mentions i suspect we will have what we had in Frontier and FFE, a realistic representation of the systems we actually know about for a core part of the galaxy, then pure procedural creation out beyond that. It was a big part of what made Frontier and FFE so interesting to navigate around, you had all these real stars.