For the record: from today's edition of Le Figaro (by Jean-Marie Guénois - various sources), on tomorrow's meeting of Cardinal Levada and the superior direction of the Society of Saint Pius X (FSSPX / SSPX) - this is the most relevant excerpt:
The great novelty comes from the Roman side. Le Figaro has learned that the Holy See could, for the first time, admit that these aspects fought by the "Integrists" are not considered as "essential" to the Catholic faith to the point of keeping outside the Church those who do not admit them. And that what has been foundational to the Catholic faith for twenty centuries is the sole [aspect] considered fundamental for communion with the Holy See, and not the interpretation from the last Council to this day.
Great autonomy of action
Another consequence: the Holy See, after it is verified tomorrow that Bishop Fellay and his faithful share the essence of the Catholic faith - which remains a demand and a sine qua non condition for Rome -, would propose to them a juridical solution so that the Fraternity of Saint Pius X is from this point forward considered a Catholic entity and not foreign to the ecclesial body anymore.