I also saw today this article Microsoft Prepares SQL Server 2017 for Linux and Containers [0], from this tweet[1] "Microsoft Prepares SQL Server 2017 for Linux and Containers, SQL Server lab runs on kubernetes and docker". If they moved the entire SQL lab (many thousands of machines) to Kubernetes is quite a big deal. They're probably warming up on how to manage it at scale, and I'm pretty sure that moving Azure SQL DB infrastructure to it is the goal. If they can get better isolation and higher density that today (some Azure Fabric derivative, afaik), it would save tonnes of moneys.

[0] https://thenewstack.io/sql-server-2017-brings-microsofts-dat...

[1] https://twitter.com/slava_oks/status/887359748047216640