Cloud Composer 2 environments can no longer be created in Melbourne (australia-southeast2)

## Announcement Announcement Cloud Composer 2 environments can no longer be created in Melbourne (australia-southeast2). We're switching this region to supporting only Cloud Composer 3 environments. Existing Cloud Composer 2 environments in this region aren't affected by this change. ## Announcement Announcement A new Cloud Composer release has started on **March 27, 2026**. Get ready for upcoming changes and features as we roll out the new release to all regions. This release is in progress at the moment. Listed changes and features might not be available in some regions yet. ## Change Change _(Airflow 3.1.7)_ Starting from version composer-3-airflow-3.1.7-build.1, Airflow workers no longer have direct access to the Airflow database of your environment. This feature was[announced previously](https://docs.cloud.google.com/composer/docs/release-notes#March%5F17%5F2026)and has finished gradually rolling out to all regions supported by Cloud Composer 3. ## Change Change New [Airflow builds](https://docs.cloud.google.com/composer/docs/composer-versions#images-composer-3)are available in Cloud Composer 3: * [composer-3-airflow-3.1.7-build.3](https://docs.cloud.google.com/composer/docs/versions-packages#composer-3-airflow-3-1-7-build-3) * [composer-3-airflow-2.10.5-build.32](https://docs.cloud.google.com/composer/docs/versions-packages#composer-3-airflow-2-10-5-build-32) (default) * [composer-3-airflow-2.9.3-build.52](https://docs.cloud.google.com/composer/docs/versions-packages#composer-3-airflow-2-9-3-build-52) ## Change Change New [images](https://docs.cloud.google.com/composer/docs/composer-versions#images-composer-2)are available in Cloud Composer 2: * [composer-2.16.9-airflow-2.10.5](https://docs.cloud.google.com/composer/docs/versions-packages#composer-2-16-9-airflow-2-10-5) (default) * [composer-2.16.9-airflow-2.9.3](https://docs.cloud.google.com/composer/docs/versions-packages#composer-2-16-9-airflow-2-9-3) ## Deprecate Deprecated The following Cloud Composer versions and builds have reached their[end of support period](https://docs.cloud.google.com/composer/docs/composer-versioning-overview#version-deprecation-and-support): composer-3-airflow-2.9.3-build.19 and composer-2.12.0-\*.