Regarding the specific update, developer notes from that period generally focused on:
Increasing the number of clues players can record (up to 15) and adding an option to filter for only "useable clues" to prevent the interface from becoming cluttered . File: Tales.of.the.Mirror.v2021.09.25.zip ...
Optimizing walking speed, adding more initial archive slots for saving, and improving "fault tolerance" for searching clues . Tales of the Mirror guide - Steam Community Regarding the specific update, developer notes from that
You possess a magic mirror that allows you to see through lies and uncover hidden secrets during conversations with NPCs . Regarding the specific update