The revelation came from the Superior-General himself a few days ago, in a sermon in a visit to Arcadia, California, and Archbishop Guido Pozzo, Secretary of the Pontifical Commission Ecclesia Dei confirmed it to La Stampa's Vatican Insider yesterday.
We post the main excerpts here for the record of current events:
[Bp. Fellay] announced it himself during the course of a sermon at Our Lady of the Angels church in Arcadia, California, on May 10, 2015: the Congregation for the Doctrine of the Faith has appointed the Superior General of the Society of St. Pius X (SSPX), Bishop Bernard Fellay, as first-instance judge in a case involving a Lefebvrian priest. The former Holy Office is in charge of dealing with a number of “delicta graviora”. The one that pops up most frequently, is the one involving the sexual abuse of minors. Fellay presented this as an example of the “contradictions” in the Holy See’s approach to the Fraternity.“We are labeled now as being irregular, at best. “Irregular” means you cannot do anything, and so for example they have prohibited us from saying Mass in the churches in Rome, for the Dominican sisters who had their pilgrimage in Rome in February. They say, “No, you cannot, because you are irregular”. And these people [who] say that, were people of [Pontifical Commission] Ecclesia Dei.”...What is new in this case is that the former Holy Office headed by Cardinal Gerhard Ludwig Müller has decided to entrust the case to Mgr. Fellay himself, making him first-instance trial judge. An expression of attention. A sign that the path toward full communion with the Lefebvrians continues, as Archbishop Guido Pozzo confirmed in a statement to Vatican Insider. He archbishop, who is also Secretary of the Pontifical Commission Ecclesia Dei, said: “The decision of the Congregation for the Doctrine of the Faith does not imply that existing problems have been resolved, but it is a sign of benevolence and magnanimity. I see no contradiction here, but rather, a step toward reconciliation.” (source)
The declaration by Bishop Bernard Fellay is available in the video below, from the sermon delivered on May 10 (in English, naturally) -- the specific statements start after 31:00.