I think the App Engine managed VMs are not available yet, so we have to wait for them. We say this on the cloud page: "Managed VMs and custom runtimes on Googl

I think the App Engine managed VMs are not available yet, so we have to wait for them. We say this on the cloud page: "Managed VMs and custom runtimes on Google Cloud Platform are currently available in Limited Preview." But I don't think it's clear enough that Dart on App Engine isn't available yet. Sorry!