All styles have been updated for XenForo 1.5.9 This update is not required. Styles for 1.5.8 will work correctly with 1.5.9 but will display few notices about outdated templates. You can ignore those notices and keep using old version. Other changes in update: Compatibility with latest version of Showcase add-on Compatibility with latest version of Article Management System add-on To update from previous version import new xml file. Other files were not changed.