Add release notes for Trino Gateway 3

docs/release-notes.md

@@ -14,4 +14,28 @@
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-# Release notes
+# Release notes
+
+## Trino Gateway 3 (xx Sep 2023)
+
+The first release of Trino Gateway is based on the Presto Gateway 1.9.5 codebase
+[#4](https://github.com/trinodb/trino-gateway/pull/4), and a refactoring to
+Trino Gateway. In addition, the following updates are included:
+
+### New features
+
+* Add authentication and authorization with LDAP, OIDC and user list from config
+  file. [#9](https://github.com/trinodb/trino-gateway/pull/9)
+* Add support for user, admin and API roles. [#9](https://github.com/trinodb/trino-gateway/pull/9)
+* Add healthcheck for Trino backends using JDBC. [#9](https://github.com/trinodb/trino-gateway/pull/9)
+* Add TCP check for routing. [#9](https://github.com/trinodb/trino-gateway/pull/9)
+* Add logic to route requests only to healthy backends. [#13](https://github.com/trinodb/trino-gateway/pull/13)
+* Add PostgreSQL support for backend database. [#13](https://github.com/trinodb/trino-gateway/pull/13)
+* Allow routing of `/v1/node` endpoint URL [#27](https://github.com/trinodb/trino-gateway/pull/27)
+
+## Improvements and bug fixes
+
+* Require Java 17 for build and runtime. [#16](https://github.com/trinodb/trino-gateway/pull/16)
+* Remove concurrency issue from repeated rules file loading. [#9](https://github.com/trinodb/trino-gateway/pull/9)
+* Filter logs for sensitive information. [#9](https://github.com/trinodb/trino-gateway/pull/9)
+* Deactivate clusters with zero workers. [#13](https://github.com/trinodb/trino-gateway/pull/13)