(This feature requires Facebook C# SDK v5.0.45 at minimum.)
In v5 of the Facebook C# SDK we introduced batch requests through Batch and BatchAsync methods. Though it supported all the http methods such as GET, POST and DELETE a major feature for uploading files using batch requests was left out (as Facebook hadn’t finalized multiple file uploading).
Yups. We are moving away from the beta tag to RC. Finally we (Facebook C# SDK devs) can start talking about the exact date for RTW.