Post-upgrade in a live SDL Web on premise and World Server SaaS scenario, we are seeing this in logs after set to verbose.

     Tridion.TranslationManager.Service    RetrieveFromTranslation    The configured URL https://domain.idiomworldserver.com:443/ws/services has been updated to https://domain.idiomworldserver.com:443/ws-api/v1/ for use by the World Server REST API.

has anyone experienced this in a live environment with Web 8.1.1 ?