Can't find the post now (think it was on HN or Ars Technica a few months back) but I'm fairly certain "the next big thing" Jeff's working on is re-imagining how a web forum should work.
I hope he cracks it - vbulletin and friends need to die!
Hopefully. I've been looking into options for fostering a small community around a new videogame, and I hate them all. Traditional forum software is much too heavy (registration, navigation), Vanilla is just strange, a subreddit is an inappropriate format (voting and the lack of long-term threads are a turnoff), and there's really not much else.