The reports say the motu proprio and the letter will be released to the world on July 7.
Kath.net says, "It emphasizes the unity of the Roman Rite which will consist of an ordinary and an extraordinary form which are supposed to inspire each other. The ordinary/regular form will continue to be the new rite of 1969. The extraordinary form will be the Missal of Bl. John XXIII. of 1962."
Before we get too excited about the document, we should wait to see what it says, naturally.
We should also pray that every U.S. bishop, including those in the Archdiocese of Los Angeles, will accept the motu proprio in good faith and generous spirit and will not be legalistic, harsh and ungenerous by interpreting it narrowly so as to effectively suppress the Tridentine Mass.
Watch certain ordinaries -- can you guess who -- say, "Oh, this motu proprio does not take into account circumstances in the USA. The Tridentine Latin Mass will upset the faithful, so we have to protect them from it. And besides, only 1% of the people want that Mass, anyway."
INTROIBO AD ALTARE DEI.
AD DEUM QUI LAETIFICAT JUVENTUTEM MEAM.