Masusder and I have found new leaks regarding chapter 16, precisely the code name of the map, the code name of the killer and the dates of the ptb.
CODE NAME KILLER
The code name of the killer, which is also thecode name of the entire patch, is: Wales
CODE NAME MAP
The new map will be a completely new realm, and its code name is: Wal_Level_01
PTB DATE:
The Player Test Build of chapter 16 will start on May 26th and there will be a high priority to find the new map, the priority will be high until June 5th.