HN39, thaks for the link.
I haven't read all the 77 pages yet.
But... at first sight it deals with 'low-level" icing and the ATR-72 accidents, not with the problem of the certification problems of pitot tubes in hi-alt icing conditions (which are not the same).
So far, in all the discussions, I've not yet seen a mention of even a 'proposal for rule making' to replace the obsolete certification rules for pitot tubes.
BTW, I'm ignoring jcjeant's waffle and interference - he's obviously got his own troll agenda.