Parallel FX Library (PFX) - a managed concurrency library being developed by a collaboration between Microsoft Research and the CLR team at Microsoft for inclusion with a future revision of the .NET Framework. It is composed of two parts: Parallel LINQ (PLINQ) and Task Parallel Library (TPL). It also consists of a set of Coordination Data Structures (CDS) - a set of data structures used to synchronize and co-ordinate the execution of concurrent tasks. The library was released as a CTP on November 29, 2007 and refreshed again in December 2007 and June 2008.
Not very much experience though...
