We have this from Melbourne, Australia: "It now appears certain that the Holy Father has signed a significant document on the Sacred Liturgy, and on the classical Latin liturgy in particular..." This is consistent with other reports, that the Holy Father was preparing a document which would outline his plan for the reform of the Roman liturgy. The manner and detail are not entirely known, but it will most likely call for increased use of Latin as the normative language of the reformed Roman Rite, as well as strongly encouraging the use of Gregorian chant, given its "pride of place" in the Vatican II decree. Statements coming from other officials would have us believe that a renewed stance against novelty is expected.
This is not just about "the Old Mass," although that will be a prominent component. And if certain changes in the curial leadership are any indication, this decree will have more "teeth" than they would have in the previous pontificate. People who read the works of the former Cardinal Ratzinger, without being overly selective, would not be surprised to see the man who is now Benedict XVI take a more holistic approach.
Here at home, a bishops' subcommittee has reviewed hymns and texts currently in use, and has released a scathing critique of the theological content of certain very popular hymns. A compilation of approved hymns is likely, one that would be required for inclusion in any worship aid in use in the dioceses of the USA. There will be more on that at a later time.