Add What's New entry for Cloud MCP (#415)

Author: JakeSCahill

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

@@ -6,6 +6,16 @@
 
 This page lists new features added to Redpanda Cloud.
 
+== September 2025
+
+=== Redpanda Cloud MCP Server: beta
+
+Connect AI assistants like Claude directly to your Redpanda Cloud account with the new xref:ai-agents:mcp/local/overview.adoc[Redpanda Cloud MCP Server]. This local server provides AI tools for managing clusters, topics, and other cloud resources through natural language commands.
+
+Ask your AI assistant to "Create a new topic called user-events" or "List all clusters in my account" and it will handle the technical details automatically. Get started with the xref:ai-agents:mcp/local/quickstart.adoc[quickstart guide].
+
+The Redpanda Cloud MCP Server uses the Model Context Protocol (MCP) to extend AI assistants with Redpanda-specific capabilities, making cloud operations more accessible through conversational interfaces.
+
 == August 2025
 
 === Manage custom resource tags in BYOC