Your local Foundation Fanatic checking in. I've seen the preview but, as ever, I'll wait for the actual product. One of the tales did touch on the fact of different races of man. They were called "Westerners, Easterners, and Southerners", for reasons lost to antiquity. Analogs to White, Asian, and Black respectively. The one thing that annoyed me most about the series was that the first three books took up about the first half of Seldon's thousand year plan. "Foundation's Edge" advanced things a little, but not all that much. Then he did not one, but two prequels. Then he died (blast). Then the "Killer B's" did their three books, but didn't really advance things either. A few short stories, by other authors, appeared in "Foundation's Friends", a tribute piece. As I recall, those were decent. Another author (Donald Kingsbury) wrote an unauthorized sequel called "Psychohistorical Crisis" that filed off the serial numbers. It had all the shortcomings of the original but little of the merits.