Local paper Nice Matin reports today that Pope Benedict XVI might visit the Principality.
In October 2009 Prince Albert received a private audience with the Pope when he visited the Vatican. Pope Benoit XVI has been invited to Monaco by the Palace and the Archbishop of Monaco, but due to a busy schedule, he will not be able to make the visit before 2012. Catholicism is the state religion in the Principality.
Links:
[1] http://www.nicematin.com/article/cote-dazur/le-pape-attendu-a-monaco-en-2012
[2] http://www.monaco.mc/Pages/le_pape_a_monaco_en_2012__