Yet you do not lend to Francis the same development of doctrine?
The body of revealed truth in the Scriptures and Tradition make up the 'Deposit of Faith', and is interpreted by the Magisterium, for what it means for the Church today.
The issue for me is not the Church's opposition to the death penalty in the here and now. The issue is that by calling the death penalty an inadmissible violation of human dignity the current pope's teaching implies that the Catholic Church taught moral error by its previous support of it. I deny the assertion that revealed truth can be
contrary to what it was in the past.
Unless this 'truth' is found to actually be immoral.
Just because a teaching does not align with the values of secular modernity does not mean the teaching is erroneous, yet alone immoral. As much as Pope Francis' words imply it he was careful to avoid the words 'intrinsically evil/immoral' opting for 'inadmissible' instead. As to outright say the death penalty is
in and of itself evil would be heresy. It would be accusing God of evil as a reading of the Pentateuch reveals that God not only sanctioned it, he commanded it under the Mosaic Law.
But is evolves with new understandings, because it is living.
No, truth is set. Truth neither evolves or changes. It is the same in all times, in all places and for all people. Our understanding of revealed truth may develop, but in no instance can this understanding 'evolve' to contradict what was previously established as revealed truth. Of course, there is the possibility that Catholicism isn't true and none of it was revealed; in which case it doesn't matter what the pope teaches whether it contradicts previous teaching or not.
But assuming Catholicism is true, I have said twice now that the pope's wording doesn't actually contradict previous teaching. The pope does not teach the Church taught evil by its support of the death penalty. But the Church was already clear that it did not support the modern application of the death penalty, so the most recent change to the catechism was unnecessary. My position is that as far as the death penalty issue was concerned, it was a clear case of better to have left well enough alone.