This April 2018 document is on jborg and its existence highlighted at service meetings in an announcement.
It is a lame reaction to pressure IMHO.
That bit about reporting if a child is still in danger is doublespeak. The faceless branch operative will discuss/persuade with the two drone elders that have phoned them whether the child is still in danger and in my experience try to parry elders who want to report.
I had a case of neglect where I wanted to report. I dutifully spoke to the branch with another elder. The branch drone did his best to dissuade us from going to the authorities and said it would be better if a family member outside the immediate family circle reported.
I said there was no chance of that happening because dopey jw granny was more worried the child would be taken into care from her thick (physically) abusive son and D-i-L.
After the phone call the other elder said we should leave it in Jehovah's hands. I just privately went to child protection services who respected my confidentiality and sent social workers in to assess.
Unfortunately there are not many elders who are waking up and going rogue on WT to do what is best for the kids.
GOOGLE the Roman Catholic child protection policy (UK anyway)and see how this once derided religion has leap frogged JW's in this area. They categorically state that they ALWAYS report.