[ELS]

for reasons I cannot fathom, the Vatican website does not list it in Latest Updates

Perhaps because the Vatican Web site posted the letter on August 10, 2007? If one goes to the index page for letters written in 2007, ans scrolls down a bit, one can see:

Letter on the occasion of the 16th centenary of the
death of Saint John Chrysostom (August 10, 2007)
[Italian]

[Pyro7480]

I guess that would do it. Still, it’s interesting that there isn’t an English translation up on the Vatican site yet.