User and Group Shares now too can have expiration dates, just as public links already can. Admins may set a default maximum lifetime. Users can easily see and collapse the permission and expiration specifics for each file in the sidebar.
With this new version, ownCloud Server drops support for PHP 7.0. Please do not forget to upgrade PHP prior to upgrading ownCloud Server, preferably to PHP 7.2 or 7.3, as support for PHP 7.1 will be dropped in one of the upcoming versions. In database news, ownCloud Server now supports MariaDB up to version 10.4 and PostgreSQL up to version 10.
Please note: As always, ownCloud administrators should read the Release Notes carefully to make sure it will run smoothly. For more detail, please read the full Changelog. You can download ownCloud 10.4.0 here.