I think there are approximately 1,200 NNNNN.com domains available to register, a little over 1%. My previous math was fuzzy. In the last 10 days, these have been registered at at rate of about 13/day (taking in to account drops that are not picked up). Who knows if this rate will continue, might go down or up in the future weeks and months. But if it does continue, it looks like there will be a steady progression towards a buyout of these domains, perhaps in the next year. Nothing like the frenzy of 2008 most likely, where 15,000+ were snapped up in less than a month. Hopefully this buyout, if it happens, will be more sustainable because it has taken place more gradually and by domainers with real interest in these domains.