This was just announced today, on the Feast of St. Joseph the Worker:
On the 150 th anniversary of the proclamation of Saint Joseph as Patron of the Universal Church, the Holy Father, Pope Francis, published the Apostolic Letter Patris cordon, with the aim “to increase our love for this great saint, to encourage us to implore his intercession and to imitate his virtues and his zeal.”
In this light it appeared opportune to update the Litany in honor of Saint Joseph, approved by the Apostolic See in 1909 (cf. Acta Apostolicae Sedis 1  290-292), by integrating seven new invocations drawn from the interventions of the Popes who have reflected on aspects of the figure of the Patron of the Universal Church. They are as follows: “Custos Redemptoris” (cf. Saint John Paul II, Ap. Exhort. Redemptoris custos ); “Serve Christi” (cf. Saint Paul VI, Homily of 19.3.1966, quoted in Redemptoris custos n. 8 and Patris Cord n. 1); “Minister salutis” (Saint John Chrysostom, quoted in Redemptoris custos , n. 8); “Fulcimen in difficultatibus” (cf. Francis, Ap. Let. Patris cordon, prologue); “Patrone exsulum, afflictorum, pauperum” ( Patris Cord , n. 5).
The new invocations were presented to the Holy Father, Pope Francis, who approved their integration into the Litany of Saint Joseph, as found in the text attached to this letter.
It will be the responsibility of the Episcopal Conferences to see to the translation and publication of the Litany in the languages which are within their competency; these translations do not require the confirmation of the Apostolic See. According to their prudential judgment Episcopal Conferences can also introduce other invocations by which Saint Joseph is honored in their countries. Such additions should be made in the proper place and preserve the literary genre of the Litany.
The additions, via Google Translate:
“Guardian of the Redeemer” “Servant [or slave] of Christ” “Minister of health” “Support in difficulties” “Patron of refugees” “Patron of the afflicted” “Patron of the poor”
For more, here’s the new complete text (in Latin).