Humanae Vitae to be 'Reinterpreted'?

The Lepanto Foundation, an international foundation based in Rome that aims to defend the principles and institutions of Christian civilization, is reporting that Pope Francis has authorized a commission to 'reinterpret' Humanae Vitae 'in the light of Amoris laetitia.' Should it lead to the sanctioning of artificial contraception by the Church it would constitute heresy – a fact the report itself acknowledges:

"On the subject of contraception, Paul VI expressed himself in Humanae Vitae, in a manner which theologians judge as infallible and thus unmodifiable, not because the document in itself had the requisites of infallibility, but because it reaffirms a doctrine always proposed by the perennial Magisterium of the Church. The Jesuit theologians, Marcelino Zalba, John Ford and Gerald Kelly, the philosophers Arnaldo Xavier da Silveira and Germain Grisez, and many other authors explain how the doctrine of Humanae Vitae needs to be considered infallible, not in virtue of the act of its promulgation, but because it confirms the ordinary, universal Magisterium of Popes and the Bishops of the world." [Source]

Padre Pio Congratulated Paul VI on Humanae Vitae

"I know that Your heart suffers much … above all, for the lack of obedience of some, even Catholics, to the lofty teachings which You, assisted by the Holy Spirit and in the name of God, have given us. … In the name of my spiritual sons and of the 'Praying Groups' I thank Your Holiness for the clear and decisive words You have spoken in the recent encyclical, 'Humanae Vitae', and I reaffirm my own faith and my unconditional obedience to Your inspired directives." [Read in full.]

From St. Padre Pio’s Letter to Bl. Pope Paul VI Commending Humanae Vitae.