Rorate Coeli broke the news!
[Update: Apr. 18, 0800 GMT]
The SSPX German District website posts the information relayed by the Swiss religious news agency KIPA/APIC, which merely reproduced the content of Tornielli's article translated by us above - and does not deny or alter in any way the information first reported by the Italian Vaticanist: "KIPA reports agreement" (in German).
[Second update: Apr. 18, 0900 GMT]
From Swiss religious news agency APIC/KIPA:
Bishop Fellay's spokesman confirms that the clarified preamble was sent to the Vatican
Paris/Menzingen, April 18, 2012 (Apic) - Between Rome and the Society of Saint Pius X, "we are still in a stage of studies," Father Alain Lorans, responsible for the communications of the Society of Saint Pius X (FSSPX / SSPX) in Paris declard on April 18 to Apic.
Commenting upon the news published on the previous day by Vaticanist Andrea Tornielli on the website "Vatican Insider", the spokesman describes as "positive" the fact the Bishop Bernard Fellay, Superior General of the SSPX, has responded, earlier in the week, to the demands of clarification posed by Cardinal William Levada, Prefect of the Roman Congregation for the Doctrine of the Faith. But "not everything is already fixed," he underlines.
Father Alain Lorans considers that Andrea Tornielli is perhaps speaking too prematurely, because Pope Benedict XVI and the Congregation for the Doctrine of the Faith still ought to examine the clarifications brought forth by Bp. Fellay regarding the doctrinal preamble submitted in September 2011. The Congregation for the Doctrine of the Faith (CDF) had asked the Society of Saint Pius X on March 16, 2012, to clarify its position on this doctrinal preamble on the occasion of a meeting in the Vatican with its Superior General. The Society had until April 15 to give a new response, which was done.
The man in charge, in Paris, for the communications of the Society expects the Vatican's communiqué - which should be released, according to him, on Wednesday, April 18 - in order to release an official communiqué. If the information is confirmed, it would mark the end of a separation of almost 24 years, following the rift caused by the "Ecône schism" of 1988, with the excommunication of Abp. Marcel Lefebvre for the ordination of four Traditionalist bishops without Rome's mandate