[BEAM-4505] Add additional details to master branch for beam-site deprecation.
diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 0000000..20bb259
--- /dev/null
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,8 @@
+Apache Beam website sources have been moved to the
+apache/beam repository at: https://github.com/apache/beam/blob/master/website
+Please open pull requests for website contributions there.
+
+This repository hosts generated HTML release documentation (Javadocs, pydocs)
+on the release-docs branch: https://github.com/apache/beam-site/tree/release-docs
+branch. Please see the Apache Beam Release guide for details on how to publish
+documentation for a new release: https://beam.apache.org/contribute/release-guide
diff --git a/README.md b/README.md
index d15c399..21a34fb 100644
--- a/README.md
+++ b/README.md
@@ -17,5 +17,11 @@
under the License.
-->
-Apache Beam website sources have been moved to the
+Apache Beam website sources have been moved to the
[apache/beam](https://github.com/apache/beam/blob/master/website) repository.
+
+This repository hosts generated HTML release documentation (Javadocs, pydocs)
+on the [release-docs](https://github.com/apache/beam-site/tree/release-docs)
+branch. Please see the Apache Beam
+[Release guide](https://beam.apache.org/contribute/release-guide/) for details
+on how to publish documentation for a new release.
