Sadly, Marty Haugen and the gang at GIA have been busy “updating” their drivel with the new words, so in practice, the actual music isn’t going to change much.
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Thanks, livius, for answering the question that came to my mind.
I would so love to have chant. St.Gregory, pray for us.
The good news (I have heard from somebody who is a music director) is that at least one of the new, generally-awful hymnals does have a much larger section of chant, notated in such a way that it is meant for congregational singing.
So there was enough of a demand for this that a company usually hostile to chant and traditional Catholic music had to include a section of it.
I think there is hope, but there’s still a huge backlog of bad music and also of music directors with terrible taste, simply because they have never known any other kind of music during their careers.