From CNS: Pope's calendar in 2008 confirms life doesn't slow down after 80 comes this excerpt:
"Sometime early in the year, the Pontifical Commission "Ecclesia Dei" plans to issue a document clarifying questions that have arisen regarding the pope's 2007 document relaxing restrictions on use of the Tridentine Mass. Sources said the pope personally is interested in removing ambiguities, and will sign off on the new document."
Something to watch for in the coming weeks or months.