First draft of beta release notes.

diff --git a/releases/11/beta/11beta4.md b/releases/11/beta/11beta4.md
new file mode 100644 (file)
index 0000000..c9176b4
--- /dev/null
+++ b/releases/11/beta/11beta4.md
@@ -0,0 +1,89 @@
+PostgreSQL 11 Beta 4 Released
+=============================
+
+The PostgreSQL Global Development Group announces that the fourth beta release
+of PostgreSQL 11 is now available for download. This release contains previews
+of all features that will be available in the final release of PostgreSQL 11
+(though some details could change before a release candidate is made available)
+as well as bug fixes that were reported during the third beta.
+
+This is likely the last beta release for PostgreSQL 11 before a release
+candidate is made available.
+
+In the spirit of the open source PostgreSQL community, we strongly encourage you
+to test the new features of PostgreSQL 11 in your database systems to help us
+eliminate any bugs or other issues that may exist.
+
+Upgrading to PostgreSQL 11 Beta 4
+---------------------------------
+
+To upgrade to PostgreSQL 11 Beta 4 from Beta 3 or an earlier version of
+PostgreSQL 11, you will 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/11/static/upgrading.html).
+
+Changes Since 11 Beta 3
+-----------------------
+
+There have been many bug fixes for PostgreSQL 11 reported during the Beta 3
+period and applied to the Beta 4 release. This release also includes other bug
+fixes that were reported for supported versions of PostgreSQL that also affected
+PostgreSQL 11. These fixes include:
+
+* JIT compilation is disabled by default. To enable JIT compilation, you must
+set `jit = on` in your configuration file or in a session
+* Enforce that names for constraints are unique
+* Several fixes for stored procedures, including improved hints and
+documentation around usage
+* Several fixes for partitioning, including fixes for runtime partition pruning
+* Fix for parallelized `CREATE INDEX` by disallowing builds on mapped catalog
+relations
+* Fix for REINDEX to prevent unprivileged users from reindexing shared catalogs
+in certain cases
+* Memory-leak fix when multiple calls are made to `XMLTABLE` in a single query
+* Several fixes for `pg_verifiy_checksums`
+* Several fixes for `libpq`, including a fix to only look up a hostname when
+explicitly requested to do so
+* Several `pg_upgrade` fixes, including handling event triggers in extensions
+correctly
+* Several fixes for `pg_dump` and `pg_restore`
+
+For a detailed list of fixes, please visit the
+[open items](https://wiki.postgresql.org/wiki/PostgreSQL_11_Open_Items#resolved_before_11beta4)
+page.
+
+Testing for Bugs & Compatibility
+--------------------------------
+
+The stability of each PostgreSQL release greatly depends on you, the community,
+to test the upcoming version with your workloads and testing tools in order to
+find bugs and regressions before the release of PostgreSQL 11. As this is a
+Beta, minor changes to database behaviors, feature details, and APIs are still
+possible. Your feedback and testing will help determine the final tweaks on the
+new features, so please test in the near future. The quality of user testing
+helps determine when we can make a final release.
+
+A list of [open issues](https://wiki.postgresql.org/wiki/PostgreSQL_11_Open_Items)
+is publicly available in the PostgreSQL wiki.  You can
+[report bugs](https://www.postgresql.org/account/submitbug/) using this form on
+the PostgreSQL website:
+
+[https://www.postgresql.org/account/submitbug/](https://www.postgresql.org/account/submitbug/)
+
+Beta Schedule
+-------------
+
+This is the fourth beta release of PostgreSQL 11. In all likelihood, this is the
+final beta release of PostgreSQL 11 before one or more release candidates are
+made available. 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 11 Beta Release Notes](https://www.postgresql.org/docs/11/static/release-11.html)
+* [PostgreSQL 11 Open Issues](https://wiki.postgresql.org/wiki/PostgreSQL_11_Open_Items)
+* [Submit a Bug](https://www.postgresql.org/account/submitbug/)