diff --git a/docs/src/main/sphinx/release.md b/docs/src/main/sphinx/release.md
index d0e99f23732c..45f46b2d020a 100644
--- a/docs/src/main/sphinx/release.md
+++ b/docs/src/main/sphinx/release.md
@@ -7,6 +7,7 @@
 ```{toctree}
 :maxdepth: 1
 
+release/release-422
 release/release-421
 release/release-420
 release/release-419
diff --git a/docs/src/main/sphinx/release/release-422.md b/docs/src/main/sphinx/release/release-422.md
new file mode 100644
index 000000000000..b91413788f7d
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+++ b/docs/src/main/sphinx/release/release-422.md
@@ -0,0 +1,52 @@
+# Release 422 (12 Jul 2023)
+
+## General
+
+* Add support for adding nested fields with an `ADD COLUMN` statement. ({issue}`16248`)
+* Improve performance of `INSERT` and `CREATE TABLE AS ... SELECT` queries. ({issue}`18005`)
+* Prevent queries from hanging when worker nodes fail and the
+  `task.retry-policy` configuration property is set to `TASK`. ({issue}`18175 `)
+
+## Security
+
+* Add support for validating JWT types with OAuth 2.0 authentication. ({issue}`17640`)
+* Fix error when the `http-server.authentication.type` configuration property
+  is set to `oauth2` or `jwt` and the `principal-field` property's value
+  differs. ({issue}`18210`)
+
+## BigQuery connector
+
+* Add support for writing to columns with a `timestamp(p) with time zone` type. ({issue}`17793`)
+
+## Delta Lake connector
+
+* Add support for renaming columns. ({issue}`15821`)
+* Improve performance of reading from tables with a large number of
+  [checkpoints](https://docs.delta.io/latest/delta-batch.html#-data-retention). ({issue}`17405`)
+* Disallow using the `vacuum` procedure when the max
+  [writer version](https://docs.delta.io/latest/versioning.html#features-by-protocol-version)
+  is above 5. ({issue}`18095`)
+
+## Hive connector
+
+* Add support for reading the `timestamp with local time zone` Hive type. ({issue}`1240`)
+* Add a native Avro file format writer. This can be disabled with the
+  `avro.native-writer.enabled` configuration property or the
+  `avro_native_writer_enabled` session property. ({issue}`18064`)
+* Fix query failure when the `hive.recursive-directories` configuration property
+  is set to true and partition names contain non-alphanumeric characters. ({issue}`18167`)
+
+## Iceberg connector
+
+* Add support for adding nested fields with an `ADD COLUMN` statement. ({issue}`16248`)
+* Change the default file format to Parquet. The `iceberg.file-format`
+  catalog configuration property can be used to specify a different default file
+  format. ({issue}`18170`)
+* Improve performance of reading `row` types from Parquet files. ({issue}`17387`)
+* Fix failure when writing to tables sorted on `UUID` or `TIME` types. ({issue}`18136`)
+
+## Redshift connector
+
+* Prevent returning incorrect results by throwing an error when encountering
+  unsupported types. Previously, the query would fall back to the legacy type
+  mapping. ({issue}`18209`)