Quick update:
There have been several issues as of late, but one larger one (that has not been discussed here) has reportedly been resolved.
As far as I know, the ride has not yet been handed over to operations. But, at least costumes are finally ready now. (Rumored to be like Fantasyland outfits with knee pads and utility belts added, if you can imagine that.)
I guess that leaves the minor train/capacity issues to resolve and testing to resume before TM previews will begin. And I have absolutely no idea for the timetable on that.
I’m still hearing the opening date is safe, and that the biggest issue they were having has been resolved, which is good news to me.