There is a new Supercharger under construction in East Brunswick, NJ at the Brunswick Square Mall. I found it posted in a NY/NJ Tesla owners group on facebook. The person who shared the info with the group gave me permission to share his photos. The address is 755 State Route 18, East Brunswick, NJ 08816. It is located near the Barnes and Noble part of the parking lot. The reporter counted about 18 stalls.
Also started a thread for this site on Tesla Motors Club forums. Here is the link:https://teslamotorsclub.com/tmc/threads/supercharger-east-brunswick-nj-brunswick-square-mall.141210/
See update I posted on TMC from this weekend, it’s ‘only’ 16 stalls (which is still huge compared to what’s in the area already):