We’ve been discussing it for quite a while The last part of the discussion was whether gestalt selectors should be used to clarify holes in the spec, but now that the specs are being updated the selectors can be reduced to only new features.
Guilded Youth may be the only game published, though Gary just wrote that he is planning to publish another one by Easter. In terms of interpreters, Parchment has been supporting the existing draft spec for at least a year, probably for a couple of years (I can’t remember exactly when I added support to it.)