Future of Project

I know this is a preview of the project but I was wondering if anyone had some information on if this project will be a stand alone project or really just for existing appengine users?  I see there isn't a simple way to connect externally to use the service, no direct ip/address to connect to, and the qps is limited to 5 when connected externally which is restrictive for production apps.   I understand that this service is in "preview" and plans change, but any insight into the direction would be appreciated.