Binary packages in https://repo.dovecot.org/
Docker images in https://hub.docker.com/r/dovecot/dovecot

 * .dovecot.sieve.log file now includes year in the header.

 * Change Sieve script result execution to delay definitive action

   execution to the end of a successful Sieve script execution session.

   This is part of an effort to solve problems with the Sieve duplicate

   test. As a side-effect, some rare temporary-error cases yield

   different results, in which partial failure is more likely.