You're right,
not yet! Jump-starting the whole ecosystem was a major time investment for me but now that there is public exposure providing a formal spec has a higher priority because someone might actually see it and do something with it ;) Keep an eye on
https://github.com/eno-lang/eno, this is where I'm working on it, I'll also announce it on the newsletter (
http://eepurl.com/dA9LcH) when it's there!