In my current project we still use R53 :-(, and we would like to be able to add metadata to component presentations dynamically at publish time, and then use this information in Broker queries. This seems not possible in R53, but since we will be migrating to 2011 in the near future I was wondering if this functionality will become available then?
Unfortunately, there is no Metadata for ComponentPresentations stored in Broker in 2011 or 2013 versions. This functionality has never been implemented on Content Delivery side. You can however build your own deployer/storage extension to pick-up on the RenderMetadata, to store it and to make is query-able.
Hope this helps.