MySQL Server 4.0 laid the foundation for new features implemented in MySQL 4.1, such as subqueries and Unicode support, which were desired by many of our customers.

MySQL Server 4.1 is currently in production status, and binaries are available for download at http://dev.mysql.com/downloads/mysql/4.1.html. All binary releases pass our extensive test suite without any errors on the platforms on which we test. See Section D.1, “Changes in release 4.1.x (Production)”.

For those wishing to use the most recent development source for MySQL 4.1, we also make our BitKeeper repositories publicly available. See Section 2.9.3, “Installing from the Development Source Tree”.