MariaDB 10.3 was released as stable (GA) with version 10.3.7 on 25 May 2018. Please also tag with mariadb for search purposes.

Some of the new features in 10.3 include: system-versioned tables (a.k.a. temporal tables), sequences, table value constructors, new window functions (such as MEDIAN), support for a subset of Oracle PL/SQL (with sql_mode=ORACLE), aggregate stored functions, instant ADD COLUMN for InnoDB tables, two new options for ALTER TABLE ... ALGORITHM (INSTANT and NOCOPY), INTERSECT and EXCEPT, and invisible columns.