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- Superslave operation is no longer enabled by default, use :ref:`setting-superslave` to enable. This setting was called ``supermaster`` in some 4.2.0 prereleases.
+- The gsqlite3 backend, and the DNSSEC database for the BIND backend, have a new journal-mode setting. This setting defaults to `WAL <https://www.sqlite.org/wal.html>`_; older versions of PowerDNS did not set the journal mode, which means they used the SQLite default of DELETE.
4.1.0 to 4.1.1
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