Update cloud changelog for March 21, 2025

Author: Blargian

docs/cloud/reference/changelog.md

@@ -29,10 +29,23 @@ import share_queries from '@site/static/images/cloud/reference/may-30-share-quer
 import query_endpoints from '@site/static/images/cloud/reference/may-17-query-endpoints.png';
 
 In addition to this ClickHouse Cloud changelog, please see the [Cloud Compatibility](/cloud/reference/cloud-compatibility.md) page.
-## March 7, 2025 {#march-7-2025}
 
-- New `UsageCost` API endpoint: The API specification now supports a new endpoint for retrieving usage information. This is an organization endpoint and usage costs can be queried for a maximum of 31 days. The metrics that can be retrieved include Storage, Compute, Data Transfer and ClickPipes. Please refer to the [documentation](https://clickhouse.com/docs/cloud/manage/api/usageCost-api-reference) for details.
+## March 21, 2025 {#march-21-2025}
+
+- Cross-region Private Link connectivity on AWS is now in Beta. Please refer to
+  ClickHouse Cloud private link [docs](/manage/security/aws-privatelink) for 
+  details of how to set up and list of supported regions.
+- The maximum replica size available for services on AWS is now set to 236 GiB. 
+  This allows for efficient utilization, while ensuring we have resources 
+  allocated to background processes.
+
+## March 7, 2025 {#march-7-2025}
 
+- New `UsageCost` API endpoint: The API specification now supports a new endpoint
+  for retrieving usage information. This is an organization endpoint and usage 
+  costs can be queried for a maximum of 31 days. The metrics that can be 
+  retrieved include Storage, Compute, Data Transfer and ClickPipes. Please refer
+  to the [documentation](https://clickhouse.com/docs/cloud/manage/api/usageCost-api-reference) for details.
 - Terraform provider [v2.1.0](https://registry.terraform.io/providers/ClickHouse/clickhouse/2.1.0/docs/resources/service#nestedatt--endpoints_configuration) release supports enabling the MySQL endpoint.
 
 ## February 21, 2025 {#february-21-2025}