A new version 0.9 of the OpenSocial Specification is available with packed full of new features to make writing, testing, and maintaining apps much easier. Many of the prototypes for these new features were implemented in Apache Shindig, so they'll be coming to a container near you in short order.

Using streamlined approach, the container can send social data to a remote server via "data pipelining" and you can combine that social data on your server, using your existing presentation layer, with a technique called "proxied content."

More info: OpenSocial | Release Notes