This release introduces a new feature for the Notifications: Watched Entities. It is an experimental feature that will soon replace the Watchlist Application. Users get Notifications, Livetable and CKEditor improvements, while developers get Query Module and Extension Manager improvements and better control over skin customization.
Full release notes available at http://www.xwiki.org/xwiki/bin/view/ReleaseNotes/Data/XWiki/9.8
See http://jira.xwiki.org/secure/IssueNavigator.jspa?reset=true&jqlQuery=category+in+%28%22Top+Level+Projects%22%29+and+fixVersion+in+%28%22%39.%38%22%29+and+resolution+in+%28%22Fixed%22%29 for more details