Various newspapers report the Holy Father has instructed the Congregation for the Doctrine of the Faith to issue a directory, a Vademecum, on Marian apparitions. Undoubtably it is aimed in part at the Medjugorje visionaries. see here
The bishops, having set up a commission of psychiatrists, psychologists, theologians and educators, should impose silence on the pseudo-visionaries. This will be a first test: history teaches, from Lourdes to Fatima, from Guadalupe in La Salette, that those who really have the gift of being in direct contact with the Madonna, follow the directives of the local Church, even in the face of enormous sufferings. Therefore, one who will not remain silent but causes the news of these alleged apparitions to circulate freely, attracting around themselves the presence of the curious, journalists and the faithful in search of a particular grace will have already given a sign that shows the falseness of their mysticism. Mary herself, in fact, would never validate an act of disobedience against a bishop, even if they were in error.
I find it surprising that good faithful priests and people, who would never dream of disobeying the Church normally, flock to the latest site of an apparition, despite the instructions of the local bishop. It is often their first introduction to liberalism or pick n mix Catholicism.