PostgreSQL 14 RC 1 announcement

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+The PostgreSQL Global Development Group announces that the first release
+candidate of PostgreSQL 14 is now available for download. As a release
+candidate, PostgreSQL 14 RC 1 will be mostly identical to the initial release of
+PostgreSQL 14, though some more fixes may be applied prior to the general
+availability of PostgreSQL 14.
+
+The planned date for the general availability of PostgreSQL 14 is September 30,
+2021. Please see the "Release Schedule" section for more details.
+
+Upgrading to PostgreSQL 14 RC 1
+-------------------------------
+
+To upgrade to PostgreSQL 14 RC 1 from earlier versions of PostgreSQL, you will
+need to use a major version upgrade strategy, e.g. `pg_upgrade` or
+`pg_dump` / `pg_restore`. For more information, please visit the documentation
+section on [upgrading](https://www.postgresql.org/docs/14/static/upgrading.html):
+
+[https://www.postgresql.org/docs/14/static/upgrading.html](https://www.postgresql.org/docs/14/static/upgrading.html)
+
+Changes Since 14 Beta 3
+-----------------------
+
+Several bug fixes were applied for PostgreSQL 14 during the Beta 3 period. These
+include:
+
+* The feature where autovacuum analyzes partitioned tables is reverted and will
+not be available in PostgreSQL 14.
+* Fix `EXPLAIN VERBOSE` failing on a query with `SEARCH BREADTH FIRST`.
+* `CREATE STATISTICS` now rejects single variable expressions.
+* Fix issue where `SELECT DISTINCT ROW` would error.
+
+For a detailed list of fixes, please visit the
+[open items](https://wiki.postgresql.org/wiki/PostgreSQL_14_Open_Items#resolved_before_14rc1)
+page.
+
+Release Schedule
+----------------
+
+This is the first release candidate for PostgreSQL 14. Unless an issue is
+discovered that warrants a delay or to produce an additional release candidate,
+PostgreSQL 14 should be made generally available on September 30, 2021.
+
+For further information please see the
+[Beta Testing](https://www.postgresql.org/developer/beta/) page.
+
+Links
+-----
+
+* [Download](https://www.postgresql.org/download/)
+* [Beta Testing Information](https://www.postgresql.org/developer/beta/)
+* [PostgreSQL 14 RC 1 Release Notes](https://www.postgresql.org/docs/14/static/release-14.html)
+* [PostgreSQL 14 Open Issues](https://wiki.postgresql.org/wiki/PostgreSQL_14_Open_Items)
+* [Submit a Bug](https://www.postgresql.org/account/submitbug/)
+* [Follow @postgresql on Twitter](https://www.twitter.com/postgresql)