The RNP 13L/R is approved and in use (when the field is using the 13s).
RNAV Visual 13L was only for testing the above procedures or something, has been NOTAMed not available.
Complete JetBlue fleet, most Delta and American Airlines planes are flying it.
Maybe even CPA got approval, not sure.
The plates are not public though.
The lower minimums are of limited use as it's unlikely that all operators going into JFK are going to get approved for it.
But it's nice for noise due to CDA and also in case the weather gets worse you will likely have less go-arounds while they change runways or the approach.