We just released Oracle Container Services for use with Kubernetes 1.1.9. This is based on Kubernetes 1.9.1.
There are also docker images to get going easily. You can download them from the Oracle Container Registry using standard docker commands. Please remember that we have OCR mirrors that provide fast performance (ocr-phx.oracle.com ocr-ash.oracle.com ocr-fra.oracle.com - I suggest using one of those alternative mirrors... at some point we will do traffic routing but right now it's still manual for this). For users trying out our OCSK8s (let me shorten it to that) in Oracle Cloud Infrastructure, do use the mirrors as they are hosted inside the OCI datacenters.
The individual packages are released in the Oracle Linux 7 add_ons channel on yum.oracle.com.
Documentation can be found here. This release is also formally supported as part of Oracle Linux support.
Also of note, we are a certified platform/distribution in the Kubernetes Conformance program. See here.