Server Array scaling behavior can now be customized using Cloud Workflow. When a server array needs to scale up or down, custom RCL logic can be used to tailor the specific behavior, such as configuring the launching instance to use spot pricing or available RIs, or ensuring the terminating instance is the instance of your choosing.
Azure Resource Manager subscriptions can now be registered with Cloud Management using an Azure Active Directory Application of your choosing. This provides full control over the security principle that RightScale uses to interact with your subscriptions and is available via Cloud Management API 1.5. Read more about how to register your subscriptions here.