Update what's new section for Azure NetApp Files

Author: netapp-manishc

articles/azure-netapp-files/whats-new.md

@@ -17,13 +17,14 @@ ms.author: anfdocs
 
 Azure NetApp Files is updated regularly. This article provides a summary about the latest new features and enhancements.
 
-
-## March 2026
+## April 2026
 
 * [Storage with cool access enhancement](cool-access-introduction.md#throughput-for-premium-and-ultra-service-levels) for Premium and Ultra service levels (preview)
 
     Azure NetApp Files introduces an enhancement to storage with cool access for Premium and Ultra service levels that more precisely aligns throughput with data tiering. When cool access is enabled, maximum throughput is dynamically calculated based on the amount of data tiered to cool access storage, rather than applying a fixed reduction. Hot data retains its configured performance, and throughput is adjusted only when data is tiered to the cool tier. This enhancement delivers more predictable QoS behavior while optimizing performance and cost as data access patterns evolve, without requiring manual tuning or reconfiguration.
 
+## March 2026
+
 * [Large volumes improvement:](large-volumes-requirements-considerations.md#requirements-and-considerations) removed 30% default limit imposed on large volumes
 
     Large volumes operational improvement no longer requires a support ticket to increase a large volume past the 30% imposed limit. This allows customer to automate their large volume size increases without waiting for approval and human intervention.