In what could be a sign of an important upcoming announcement, Pope Benedict XVI convened a surprise meeting on Saturday with the leaders of the Roman curia.

The Holy See’s Press Office simply reported that the meeting took place on Saturday morning at the Apostolic Palace, where the Pontiff resides.

Although the Holy See has not revealed the nature of the meeting, several Vatican analysts said the Holy Father has prepared two important documents that merit the opinion of curial officials.

The first is a the possible Motu Propio—which could be accompanied by a study on the subject by experts—that would allow the universal celebration of the Mass of St. Pius V, the Latin Rite that was universally celebrated prior to the liturgical reform of Vatican II.

The second document is the expected letter to Chinese Catholics, which Benedict XVI himself announced would be forthcoming during the Easter season and which could mark an historic turn in relations between the Holy See and Communist China.