OK, just to clear up a few things mentioned in this thread - these are to the best of my knowledge, Level would still be the best source if you have specific questions:
- Level is working on their own freewheel with the bolt on interface. Not sure if testing is complete yet.
- They are also now offering the hub with one side threaded so you can run a standard freewheel. I suspect this was due to feedback from people who have dropped $70 on a White Industries freewheel but wanted the Level fixed option on one side. This hub is supposed to be available now.
- The double sided bolt-on interface is the standard hub and is still available.

I doubt that it will be threaded to accept a lockring since it works against the idea of the Level bolt-on set up. You have a much lower chance of stripping the threaded hub on a freewheel than on a fixed cog. I will try to ask Scott about these things when I see him at SSWC this weekend, maybe get some more info. OK, need to finish packing and get on the road.