According to Sean Lynch, http://news.ycombinator.org/item?id=2273450:
Yes, to confirm, this is not an abstraction on the current Datastore but a separate "real-deal" service. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine/-/Bdj14eaDdnEJ. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
