Release notes: https://kantega-sso.atlassian.net/wiki/spaces/KSE/pages/975241217/Kantega+SSO+Enterprise+5.7.x+release+notes#Changes-in-5.7.2
P.S. This version contains a database migration for API tokens. Make sure to take a Backup of your configuration (Snapshot of config) before this update, in case you have to revert back.