Just received the BCDW Newsletter. Page one, lead article:
USCCB Administrative Committee Approves Change to Sing to the Lord: Music in Divine Worship
In response to a request from the Congregation for Divine Worship and the Discipline of the Sacraments, the USCCB Administrative Committee adopted a change on September 12, 2012 to the U.S. Bishops’ 2007 guidelines on liturgical music, Sing to the Lord: Music in Divine Worship. Number 188 of the document has been altered to remove any further permission for the use of Christological tropes or other adaptations to the text of the Agnus Dei (Lamb of God).
Not unexpected. Note the words "further permission."
Gotta sing. Gotta pray.