Release announcement for PostgreSQL 13 RC 1

diff --git a/releases/13/beta/13rc1.md b/releases/13/beta/13rc1.md
new file mode 100644 (file)
index 0000000..e7fefa8
--- /dev/null
+++ b/releases/13/beta/13rc1.md
@@ -0,0 +1,54 @@
+PostgreSQL 13 RC 1 Released
+===========================
+
+The PostgreSQL Global Development Group announces that the first release
+candidate of PostgreSQL 13 is now available for download. As a release
+candidate, PostgreSQL 13 RC 1 will be mostly identical to the initial release of
+PostgreSQL 13, though some more fixes may be applied prior to the general
+availability of PostgreSQL 13.
+
+The planned date for the general availability of PostgreSQL 13 is September 24,
+2020. Please see the "Release Schedule" section for more details.
+
+Upgrading to PostgreSQL 13 RC 1
+-------------------------------
+
+To upgrade to PostgreSQL 13 RC 1 from Beta 3 or an earlier version of
+PostgreSQL 13, you will need to use a strategy similar to upgrading between
+major versions of PostgreSQL (e.g. `pg_upgrade` or `pg_dump` / `pg_restore`).
+For more information, please visit the documentation section on
+[upgrading](https://www.postgresql.org/docs/13/static/upgrading.html).
+
+Changes Since 13 Beta 3
+-----------------------
+
+There have been many bug fixes for PostgreSQL 13 reported during the Beta 3
+period and applied to this release candidate. These include:
+
+* Adjustments to the costing model for hash aggregates that spill to disk.
+* Adjustments to the output of `EXPLAIN (BUFFERS)`.
+* Display the stats target of extended statistics in the output of `\d`.
+
+For a detailed list of fixes, please visit the
+[open items](https://wiki.postgresql.org/wiki/PostgreSQL_13_Open_Items#resolved_before_13rc1)
+page.
+
+Release Schedule
+----------------
+
+This is the first release candidate for PostgreSQL 13. Unless an issue is
+discovered that warrants a delay or to produce an additional release candidate,
+PostgreSQL 13 should be made generally available on September 24, 2020.
+
+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 13 RC 1 Release Notes](https://www.postgresql.org/docs/13/static/release-13.html)
+* [PostgreSQL 13 Open Issues](https://wiki.postgresql.org/wiki/PostgreSQL_13_Open_Items)
+* [Submit a Bug](https://www.postgresql.org/account/submitbug/)
+* [Follow @postgresql on Twitter](https://www.twitter.com/postgresql)