I wasn't at Phoenix Forum, but I doubt there's any new info.

Everything is in limbo at the moment; the 6th circuit court of appeals ruled the entire 2257 unconstitutional, but that will probably be overturned. It is suspected, though no one's said outright, that inspections are suspended until 2257 is reinstated or there's some resolution of that.

Meantime, proposed regulations for 4472 were published for comment months back, but again, nothing has happened and it's possible that they are holding up on that until the underlying issue with 2257 is resolved, since 4472 is sort of a "piggyback" on 2257.