By a letter published and dated of today, the Pontifical Commission Ecclesia Dei granted to all priests of the Latin Rite (secular or religious) the possibility of celebrating on the centenary of the first main apparition (May 13, 2017) the Mass of Our Lady of Fatima -- it is a Votive Mass of the II Class, using the exact same texts and prayers of the Votive Mass of the Immaculate Heart of the Blessed Virgin Mary (August 22nd in the Traditional Calendar).
A copy of the letter is published below: