Will GKE offer any of this multi-zone capability for nodes, or is the plan to wait for 1.3 to offer any more availability options there?

I imagine there is some way to do this yourself today by just adding nodes with the right labels and startup script, or even referencing the same images as the google-managed instance group for the cluster, but it feels like that would take away the ability to upgrade the nodes using the google tooling?

Thanks! Really loving the kubernetes ecosystem and appreciate the activity here on HN from the google team members...