The Altera Centauri collection has been brought up to date by Darsnan. It comprises every decent scenario he's been able to find anywhere on the web, going back over 20 years.
I just got off the phone with the local (northern CA) Babbage software store. they show ship date today, which means (according to them) they will have it in their Thursday (11-16-00) shipment and on the shelves that evening!!!!