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<appendix id="release">
 <title>Release Notes</title>

  <para>
   The release notes contain the significant changes in each
   <productname>PostgreSQL</productname> release, with major features and migration
   issues listed at the top.  The release notes do not contain changes
   that affect only a few users or changes that are internal and therefore not
   user-visible.  For example, the optimizer is improved in almost every
   release, but the improvements are usually observed by users as simply
   faster queries.
  </para>

  <para>
   A complete list of changes for each release can be obtained by
   viewing the <link linkend="git">Git</link> logs for each release.
   The <ulink
   url="https://www.postgresql.org/list/pgsql-committers/"><literal>pgsql-committers</literal>
   email list</ulink> records all source code changes as well.  There is also
   a <ulink url="https://git.postgresql.org/gitweb/?p=postgresql.git;a=summary">web
   interface</ulink> that shows changes to specific files.
  </para>

  <para>
   The name appearing next to each item represents the major developer for
   that item.  Of course all changes involve community discussion and patch
   review, so each item is truly a community effort.
  </para>

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&release-12;
&release-11;
&release-10;
&release-9.6;
&release-9.5;
&release-9.4;
&release-9.3;
&release-9.2;
&release-9.1;
&release-9.0;
&release-8.4;
&release-8.3;
&release-8.2;
&release-8.1;
&release-8.0;
&release-7.4;
&release-old;

</appendix>
