One of the major themes behind Anglicanorum Coetibus, Summorum Pontificum, and the creation of the Third Edition of the Roman Missal, is the Hermeneutic of Continuity. Here is a simple definition of what that is (as opposed to the Hermeneutic of Rupture supported by "revisionists", such as the leadership of the Episcopal Church USA or Catholic groups such as "Catholics for a Changing Church."
The Hermeneutic of Continuity demonstrates how Vatican II is not a license for creating a whole new Church (or radically changing the essence of it!), but rather to bring that same Catholic essence into a changing culture. This means that while different liturgical forms may be used (the Latin mass, the ordinary Roman Rite masses in native languages, the other non-Roman Rites, and now the Anglican Use(s) of the Roman Rite) they should express the same faith. Theology is expressed by liturgy and vice versa. Liturgy cannot be separate from dogmas and morals.
Anyway, for the more theologically inclined out there, I came across this interesting piece from a new blog, appropriately called The New Theological Movement. It is a segment on the Hermeneutic of Continuity out of a theological journal, of which I cannot seem to identify. If anyone can, please do let me know!
Click here: The Hermeneutic of Continuity