I enjoyed Year Zero, and I am looking forward to reading the new book - it is on my list to buy once the price drops a bit from new-release-priced hardcover.
Can’t help but put a guess at the ‘surprise guest’ for episode 7 re: super AI risk. Elon Musk has made several pleas to take AI risk seriously, and would be a blockbuster name to drop about 6 weeks from now when the launch hype slows. There are many other knowledgeable people out there who are probably as well informed about AI, but no bigger ‘name.’