MotherDuck Release notes and new features

CREATE SHARE defaults to UPDATE AUTOMATIC on DuckDB 1.5.5+

On DuckDB 1.5.5 and later, CREATE SHARE without an explicit update mode now defaults to UPDATE AUTOMATIC. Clients on 1.5.4 and earlier are unchanged.

• CREATE SHARE defaults to UPDATE AUTOMATIC on DuckDB 1.5.5+
• Flights available in AWS Sydney and Tokyo regions
• Org-wide view-only Flight visibility for Admins
• DuckDB 1.5.5 support