s is the first release of the 8.x cycle. This version introduces new experimental minimal XWiki distribution and a new Distribution Wizard step to create the first user with administration right instead of importing Admin user. It also adds many improvements related to nested spaces on copy and rename features, location picker, link syntax. Various new option have been added to the chart macro and as usual you will find many more improvements in the detailed release note.
Full release notes available at http://www.xwiki.org/xwiki/bin/view/ReleaseNotes/ReleaseNotesXWiki80
See http://jira.xwiki.org/secure/IssueNavigator.jspa?reset=true&jqlQuery=category+in+%28%22Top+Level+Projects%22%29+and+fixVersion+in+%28%22%38.%30%22%29+and+resolution+in+%28%22Fixed%22%29 for more details