add tier 4 for Azure (#123)

* add tier 4 for Azure

* add tier 5

* remove note from dedicated + add what's new

* add Ded regions: centralus, eastus2, norwayeast

* update what's new for regions

* minor edit

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

@@ -9,6 +9,10 @@ This page lists new features added in Redpanda Cloud.
 
 == January 2025
 
+=== New tiers and regions on Azure
+
+xref:reference:tiers/index.adoc[Tiers 1-5] are now supported for BYOC and Dedicated clusters running on Azure. Also, the following xref:reference:tiers/dedicated-tiers.adoc#dedicated-supported-regions[regions] were added for Dedicated clusters: Central US, East US 2, Norway East. 
+
 === Serverless Pro: LA
 
 xref:get-started:cluster-types/serverless-pro.adoc[Serverless Pro] is a new enterprise-level cluster option. It is similar to Serverless Standard, but with higher usage limits and Enterprise support. This is a limited availability (LA) release. To start using Serverless Pro, contact https://redpanda.com/try-redpanda?section=enterprise-trial[Redpanda Sales^]. 

modules/reference/partials/tiers.adoc

@@ -19,7 +19,7 @@ When you create a BYOC cluster, you select your usage tier. Each tier provides t
 
 [NOTE]
 ====
-* On Azure, tiers 1-3 are supported. 
+* On Azure, tiers 1-5 are supported. 
 * Redpanda supports compute-optimized tiers with AWS Graviton3 processors.
 * Depending on the workload, it may not be possible to achieve all maximum values. For example, a high number of partitions may make it more difficult to reach the maximum value in throughput.
 * Partition counts are based on the assumption that the Redpanda Cloud replication factor is 3 (default). If you set a higher replication factor, the maximum value for partitions will be lower.
@@ -120,7 +120,6 @@ When you create a Dedicated cluster, you select your usage tier. Each tier provi
 
 [NOTE]
 ====
-* On Azure, tiers 1-3 are supported. 
 * Depending on the workload, it may not be possible to achieve all maximum values. For example, a high number of partitions may make it more difficult to reach the maximum value in throughput.
 * Partition counts are based on the assumption that the Redpanda Cloud replication factor is 3 (default). If you set a higher replication factor, the maximum value for partitions will be lower.
 * Connections are regulated per broker for best performance. For example, in a tier 1 cluster with 3 brokers, there could be up to 3,000 connections per broker. 
@@ -178,10 +177,13 @@ Azure::
 |=== 
 | Region
 
+| Central US
 | East US 
+| East US 2
 | North Europe
+| Norway East
 | UK South
 |===
 --
 ====
-endif::[]
+endif::[]