La donna del lago to Naples in early June with no projects in the offing, except to become involved with overseeing a new production of his "La gazza ladra" there. Also, a commission from Milan's La Scala for an opera, which would become "Bianca e Falliero", had been offered and was planned for December of that year. Suddenly, the Italian composer Gaspare Spontini withdrew from a commitment to write two operas for the Naples house that season, thus leaving a huge gap. Rossini was quickly asked to write an opera for a September premiere; rather than use an existing libretto, the house insisted upon
La forza del destino (1867). Following these productions, Verdi made further, more extensive revisions to the opera with additions to the libretto by Antonio Ghislanzoni. This version, which premiered at La Scala, Milan, on 27 February 1869, has become the standard performance version. The most important changes were a new overture (replacing a brief prelude); the addition of a final scene to Act 3, following the duel between Carlo and Alvaro; and a new ending, in which Alvaro remains alive, instead of throwing himself off a cliff to his death. The opera in this version is frequently performed in the world's opera houses today.