Bartłomiej Piotrowski wrote:
A new major release of MariaDB will be moved to [extra] soon. The change in versioning scheme has been made to clearly distinguish provided functionality from MySQL 5.6. From now on, it won't be possible to easily move between various MySQL implementations provided in the official repositories.
Due to major changes in MariaDB 10.0, it is recommended (although not necessary) to dump the tables before upgrading and reloading the dump file afterwards. After upgrading to the new version don't forget to restart `mysqld.service` and run `mysql_upgrade` to check the databases for possible errors.
Additionally TokuDB storage engine has been disabled because of repeating build failures. I'm sorry for any inconvenience caused.
For detailed information on changes and upgrade steps, please refer to [MariaDB Knowledge Base] and [MySQL Reference Manual].