The Chapbook web site has been updated with URLs for beta 2. Note-- plural URLs. There are now two flavors of Chapbook: the regular one, and a stripped-down micro build that removes all test-related code, that's about 20% smaller.
I've also opened Chapbook's issue tracker, with some trepidation, to the world at large. Time to find out what everyone thinks, I guess!
This should be the final version before final 1.0.0.