Creating an Aurora Serverless Cluster from cloudformation?

It is now possible to create an AWS::RDS::DBCluster with an EngineMode set to serverless. See more here: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-rds-dbcluster.html#cfn-rds-dbcluster-enginemode

Thanks for Chris's update. As an example, here is my cloudFormation template for serverless aurora. We no longer need the DBInstance.

  RDSCluster:
    Type: AWS::RDS::DBCluster
    Properties:
      MasterUsername: 
        Ref: DBUsername
      MasterUserPassword: 
        Ref: DBPassword
      DatabaseName: RANDOMNAME
      Engine: aurora
      EngineMode: serverless
      ScalingConfiguration:
        AutoPause: true
        MaxCapacity: 16
        MinCapacity: 2
        SecondsUntilAutoPause: 300
      DBSubnetGroupName:
        Ref: DBSubnetGroup

More complete example of all available options for RDS (including Aurora): https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-rds-dbcluster.html