The Vatican web site has now published Pope Benedicts' Motu Proprio, Summorum Pontificum. It is currently available only in Latin (as seems fitting).

But the accompanying Letter to the Bishops is available in English. Here is, to my mind, a crucial paragraph, reflective of the personal tone of the whole Letter:

I now come to the positive reason which motivated my decision to issue this Motu Proprio updating that of 1988.  It is a matter of coming to an interior reconciliation in the heart of the Church.  Looking back over the past, to the divisions which in the course of the centuries have rent the Body of Christ, one continually has the impression that, at critical moments when divisions were coming about, not enough was done by the Churchs leaders to maintain or regain reconciliation and unity.  One has the impression that omissions on the part of the Church have had their share of blame for the fact that these divisions were able to harden.  This glance at the past imposes an obligation on us today: to make every effort to unable for all those who truly desire unity to remain in that unity or to attain it anew.  I think of a sentence in the Second Letter to the Corinthians, where Paul writes: Our mouth is open to you, Corinthians; our heart is wide.  You are not restricted by us, but you are restricted in your own affections.  In return widen your hearts also! (2 Cor6:11-13).  Paul was certainly speaking in another context, but his exhortation can and must touch us too, precisely on this subject.  Let us generously open our hearts and make room for everything that the faith itself allows.

The rest of the Letter may be found here.

P.S. The challenge of an intelligent grasp of Latin in the present cultural climate may be indicated by the fact that the leading Italian daily, Corriere della Sera, in an article in today's edition, twice refers to the Motu Proprio as SummArum Pontificum. O tempora, o mores!