Update items suggested by Nik

Author: jonels-msft

articles/cosmos-db/postgresql/product-updates.md

@@ -16,13 +16,27 @@ ms.date: 12/06/2022
 
 ## Release notes
 
-### Release: November 2022
+Azure Cosmos DB for PostgreSQL gets updated regularly.
 
-* TODO
+Updates that don’t require each cluster to be updated are rolled out gradually to [all supported regions](resources-regions.md). Once such an update is rolled out to a region, it's available immediately on all new and existing Azure Cosmos DB for PostgreSQL clusters in that region.
 
-### Release: October 2022
+Updates that must apply uniformly to all nodes in a cluster, such as [new minor PostgreSQL version](https://www.postgresql.org/developer/roadmap/) updates, are available immediately on newly created clusters. The updates are delivered to existing clusters as a part of the next [scheduled maintenance](concepts-maintenance.md) event.
 
-* Rebranded from Azure Database for PostgreSQL - Hyperscale (Citus)
+### November 2022
+
+* General availability: [Cross-region cluster read replicas](concepts-read-replicas.md) for improved read scalability and cross-region disaster recovery (DR).
+* General availability: [Latest minor PostgreSQL version updates](reference-versions.md#postgresql-versions) (11.18, 12.13, 13.9, 14.6, and 15.1) are now available in all supported regions.
+
+### October 2022
+
+* General availability: [Azure Cosmos DB for PostgreSQL, formerly known as Hyperscale (Citus), is now generally available](https://devblogs.microsoft.com/cosmosdb/distributed-postgresql-comes-to-azure-cosmos-db/).
+	* See all previous product updates under the Hyperscale (Citus) name [here](https://azure.microsoft.com/updates/?query=Hyperscale%20%28Citus%29).
+* General availability: [PostgreSQL 15](https://www.postgresql.org/docs/release/15.0/) support.
+	* See all supported PostgreSQL versions [here](reference-versions.md#postgresql-versions).
+	* [Upgrade to PostgreSQL 15](howto-upgrade.md)
+* General availability: [Citus 11.1 with new features and PostgreSQL 15 in Citus](https://www.postgresql.org/about/news/announcing-citus-111-open-source-release-2511/).
+* Free trial: Now Azure Cosmos DB for PostgreSQL is a part of the [Azure Cosmos DB 30-day free trial](https://cosmos.azure.com/try/).
+* Preview: Product Quick start in Azure portal with hands-on tutorials and embedded psql shell.
 
 ## Features in preview