Didn't Bishop Fellay tell us we did not have to worry about the SSPX ever changing its Statutes as a result of its pursuit of a practical accord with modernist Rome?
Well, here is an excerpt from the SSPX Statutes (1976 version, augmented by the General Chapter of 1982) vs the new policy (which will necessarily result in....changing the Statutes):
"5. The entry into the Fraternity is realized for the clergy through the commitment, publicly expressed before the Superior General or his delegate and before the Blessed Sacrament, to remain faithful to the statutes. This commitment cannot take place before a year of preparation in a house of the Fraternity.
6. Clerics during their formative years up to the sub-diaconate will make annual commitments. From the sub-diaconate they can commit for three years and after a new re-engagement of three years they can make a permanent commitment. For priests who would commit themselves to the Fraternity they must make at least one commitment of three years before their final commitment. The brothers, according to their particular statutes, after six years of temporary vows, that is to say two times three years, make perpetual vows."
NB: The new policy was first announced publicly in December, 2018. In all likelihood, therefore, it was agreed to change them at the 2018 General Chapter. The change is certainly related to the pursuit of an accord with modernist Rome (i.e., coming into conformity with the 1983 CIC: With the SSPX now arguing "the state of necessity recedes," they no longer have any theological justification for deviating from the canon law of the conciliar church).