Afaik Larian has been pretty hush-hush about races. We know we're going to get all the PHB classes and most PHB races, but to my knowledge they haven't confirmed (or denied) any races besides the EA ones and possibly gnomes. I hope we get Dragonborn, if only because of the visuals.
As for non-PHB speculation, I'm pretty sure svirfneblin and duergar are going to be added.
