The new versionHistory JSP can be found here - /libs/cq/gui/components/coral/common/admin/timeline/events/version/version.jsp The preview button invokes com.day.cq.wcm.core.impl.servlets.VersionPreviewServlet in AEM. 1673 TIMER_START{ResourceResolution}
1882 TIMER_END{208,ResourceResolution} URI...