I’m not sure that the Vatican is in the approval chain for scripture translations, EXCEPT in the sense of which translations might be approved for liturgy.
The place to ask about that is the U.S. Council of Catholic Bishops, perhaps at their website or send a letter there, and it will eventually get to the right person.
Beyond that advice, I don’t know about the NJB. “Approved” does not mean that it is popular, necessarily, is my take on the matter.
There are some new translations of prayers in the Mass, and maybe there is a shift in preference for Mass texts from the NAB to the NRSV-2CE.