DOC-1415 add new AWS regions (#315)

* DOC-1415 add new AWS regions

* incorporate review suggestion

* typo

* typo

* incorporate review

* add link from Control Plane API

* incorporate Nicola's feedback

Author: micheleRP

modules/ROOT/nav.adoc

@@ -429,6 +429,7 @@
 
 * xref:reference:index.adoc[Reference]
 ** xref:reference:tiers/index.adoc[Cloud Tiers and Regions]
+*** xref:reference:tiers/serverless-regions.adoc[]
 *** xref:reference:tiers/byoc-tiers.adoc[]
 *** xref:reference:tiers/dedicated-tiers.adoc[]
 ** xref:reference:api-reference.adoc[]

modules/get-started/pages/cluster-types/serverless.adoc

@@ -59,7 +59,7 @@ To create a Serverless cluster:
 
 . Enter a cluster name, then select the resource group. If you don't have an existing resource group, you can create one. Refresh the page to see newly-created resource groups. 
 +
-Serverless clusters are currently available in certain AWS regions. Redpanda expects your applications to be deployed in the same AWS region. For best performance, select the region closest to your applications. Serverless is not guaranteed to be pinned to a particular availability zone within that region.
+Serverless clusters are available in the AWS regions listed in xref:reference:tiers/serverless-regions.adoc[Serverless regions]. Redpanda expects your applications to be deployed in the same AWS region. For best performance, select the region closest to your applications. Serverless is not guaranteed to be pinned to a particular availability zone within that region.
 
 . Go to the *Topics* page to create a topic. Under the *Actions* dropdown, you can produce messages to it. Add team members and grant them access with ACLs on the *Security* page. 
 

modules/get-started/pages/whats-new-cloud.adoc

@@ -1,12 +1,18 @@
 = What's New in Redpanda Cloud
-:description: Summary of new features in Redpanada Cloud.
+:description: Summary of new features in Redpanda Cloud.
 :tag-pipeline-service: api:ROOT:cloud-dataplane-api.adoc#tag--Redpanda-Connect-Pipeline
 :page-aliases: deploy:deployment-option/cloud/whats-new-cloud.adoc
 :page-toclevels: 1
 
 
 This page lists new features added to Redpanda Cloud.
 
+== June 2025
+
+=== Support for additional regions
+
+Serverless clusters now support the following new xref:reference:tiers/serverless-regions.adoc[regions on AWS]: ap-northeast-1 (Tokyo), ap-southeast-1 (Singapore), and eu-west-2 (London).
+
 == May 2025
 
 === Serverless Standard: deprecated

modules/manage/partials/controlplane-api.adoc

@@ -278,21 +278,13 @@ TIP: When using a shell substitution variable for the token, use double quotes t
             "cloud_provider": "CLOUD_PROVIDER_AWS",
             "available": true
         },
-        {
-            "name": "us-east-1",
-            "display_name": "us-east-1",
-            "default_timezone": {
-                "id": "America/New_York",
-                "version": ""
-            },
-            "cloud_provider": "CLOUD_PROVIDER_AWS",
-            "available": true
-        }
+        ...
     ],
     "next_page_token": ""
 }
 ----
 
+You can also see a list of supported regions in xref:reference:tiers/serverless-regions.adoc[Serverless regions].
 
 === Create a new serverless cluster
 

modules/reference/pages/tiers/index.adoc

@@ -1,3 +1,3 @@
 = Tiers and Regions
-:description: When you create a BYOC or Dedicated cluster, you select your region and usage tier. Each tier provides guaranteed workload configurations for throughput, partitions (pre-replication), and connections.
+:description: When you create a cluster, you select your region. For BYOC and Dedicated clusters, you also select a usage tier, which provides guaranteed workload configurations for throughput, partitions (pre-replication), and connections.
 :page-layout: index

modules/reference/pages/tiers/serverless-regions.adoc

@@ -0,0 +1,24 @@
+= Serverless Regions
+:description: Learn about supported regions for Serverless clusters. 
+
+
+== Serverless supported regions
+
+[tabs]
+====
+Amazon Web Services (AWS)::
++
+--
+|=== 
+| Region 
+
+| ap-northeast-1
+| ap-south-1
+| ap-southeast-1
+| eu-central-1
+| eu-west-2
+| us-east-1
+| us-west-2
+|===
+--
+====