CDF to elaborate on the famous "subsistit" of Lumen Gentium

Gerald breaks the story in English:

According to my pals at Kath.net, a new CDF document can be expected shortly.

According to well-informed circles in the Vatican, there will be a new document by the Congregation for the Doctrine of the Faith on a hot topic. It will deal with the self-conception of the Church and will supposedly be released July 10th.

This document will state the unique character of the Catholic Church and that Protestant churches are not churches in the narrow sense. The topic will be the sentence "Ecclesia subsistit in Ecclesia catholica" (The Church of Christ subsists in/is realized in the Catholic Church) from the Vatican II document Lumen gentium.

There's independent confirmation, ie via a different source, of this by Il Giornale's Andrea Tornielli, as this Italian blog points out, thanks for Steven for pointing to it.

My professor for Ecclesiology at Sacred Heart Major Seminary, Dr. Robert Fastiggi, absolutely burned the phrase "This Church constituted and organized in the world as a society, subsists in the Catholic Church" (LG #8) into our heads during the course.

For this reason (and others), I'm thrilled to find out that CDF is preparing to publish a document which will elaborate on this important teaching.

Update: CWNews adds its coverage here.