Nobody is sharing any details. The guidelines for priests issued by the Argentinian bishops and now for those in the Diocese of Rome are laying down a pastoral practice to be followed. The same is true for American and Canadian bishops who have issued guidelines for their priests, opposite, however, to those issued by the Argentinians and the Diocese of Rome.
A priest saying that he allows or does not allow divorced and remarried couples to receive Communion is not breaking the seal of Confession.