What a tease, I just discovered that there's nothing in the package. Sorry.
So an exciting video claiming package support for App Engine/Managed VMs, Datastore, memcached and more... but no real docs and no real lib.
I guess it's all just being rolled out messily and will be available in full in a matter of days?
Aggh, I want it now. :) I am experimenting w/ an updated stack that takes me from pgsql on RDS > Datastore, EC2 > Cloud Managed VM.