About two months since audiobooks became available for download and listening via Google Play and the iTunes Store for the first time, an update aims to improve the user's experience by adding bookmarks and smart resume capabilities. In addition to them, the update also brings the Family Library feature to 13 new countries and refines the playback speed settings.
https://www.notebookcheck.net/Google-Play-audiobooks-get-Bookmarks-Smart-Resume-and-more.293616.0.html