You had asked this at a right time. We just released Anomaly Detection in Beta for our Premier pack users.
This platform will initially detect anomaly based on seasonal values. This will use last 4 weeks seasonal data for determining anomaly. Currently it just pushes the anomaly information to events of the monitor. We yet to bring in alerting support for this feature. We will do it after we stabilize things in this.
We will have our other packs to support Anomaly Detection very soon.
Please find few screenshots of Anomaly Reports.
I would look forward to here any suggestion or use case you would like to solve using this platform.