See An Episcopal Hat-Trick for the Archdiocese of Detroit! Besides the fact that he is an immigrant that came here at the age of 19 his youth stands out. All of 41 years old!! A pattern of Pope Benedict's we are seeing. I am anxious to see what Whispers in the Loggia (who for once in a long time) appears to have got scooped by this since there was nothing indicating on site this was coming.
I am not sure of this but I think Holy Week's announcements of new Bishops are sort of rare.