Found this interesting:
Benedict XVI has decided not to attend the Mass to inaugurate his successor as Pope, the Vatican said Wednesday.
Holy See spokesman Fr. Federico Lombardi would not say why the Pope Emeritus would not be at the formal Mass.
Benedict’s secretary Archbishop Georg Gänswein said the former pontiff is following the election of his successor "attentively" from his residence in Castel Gandolfo, just outside Rome.
Gänswein said the former pontiff had been keeping track of events on television, beginning with yesterday's pre-conclave Mass.