MySQL and MariaDB will start to diverge after version 5.5
MariaDB is a true open-source, drop-in binary replacement for MySQL – that is until the next version of MySQL 5.6 – MariaDB is going to go its own way for its version 10 jump after 5.5
So if you were hoping for innodb fulltext search in MariaDB 10, it’s not going to happen, but maybe in 10.1