Power BI output has been one of our most popular features, enabling customers to quickly build a live updating dashboard on streaming data without any heavy coding work. Along with many exciting announcements over the last 1 month (General Availability, Build Sessions, Customer and Partner sessions at Build and Ignite), we also recently announced that Power BI output is now a public preview feature of Azure Stream Analytics. See this blog on Azure Blog site. If you didn't notice earlier, we published a detailed documentation on how to implement Power BI output in your ASA job.
Happy uncovering real time insights on streaming data using ASA and Power BI, and let us know your scenario and suggestions for making our product better to suit your scenario !