It is writen here , here and here that the Vatican is trying to water down the implementing decree of the motu proprio Summorum Pontificum.
In essence, the blogs mentioned above [Rorate, Messalatino, Summorum Pontificum] instead of giving a greater impetus to the decree Motu Proprio, showing how it will explain the implementation of the Old Mass to the bishops in the best way; they are saying instead that the Old Liturgy is just a concession to the "traditionalists" in recognition of their particular sensitivity. Even still the bloggers write that the originator of this dilution would be Monsignor Charles Scicluna, promoter for justice in Malta under the Congregation for the Doctrine of the Faith, and Cardinal Antonio Canizares Llovera, prefect of the Congregation for Divine Worship.
I have personally made the necessary checks and I can say that, according to sources inside the Vatican, the information given above "is entirely without foundation." The implementation of the decree is not being watered down. Cardinals Canizares and Scicluna among others are not working in that direction.
The Pontifical Commission Ecclesia Dei, which is now chaired by the prefect of the Doctrine of the Faith, Cardinal William Joseph Levada, has already prepared the text of the decree, is waiting for the difficult work of translation to finish, and expects to publish all (provided that the translations do not suffer delays) before Easter.
Original at Apostolic Palace...here