[smarterclayton]

Not really Google driving this, but there is active work on integrating the OCI runtime (the "standard" evolution of libcontainer from Docker, used in Docker 1.12) as a container runtime to Kube. The desire is to reduce some of the overlap between container daemons on the nodes, but also support a wider array of container runtime setups (being able to run VMs via hyper, rkt containers, OCI containers, Docker containers, etc). Each of those mentioned technologies is being sponsored by different parts of the Kubernetes community, but the goal is to have more power and flexibility at runtime. Docker will continue to be a primary part of the story.