FTD might decide one day to release it, but with the botch-up they did on Pittsburgh NYE 1976, it's unlikely. A very good quality audience recording is what's needed, but the ones that exist can only be classed as "good".
The recent boiotleg release is probably the best you'll ever get.
And, aside from it being the last show, there's nothing else very significant about it. A reasonably good show, but nothing outstanding.