Parallel Computing Initiative..
As a part of Parallel computing initiative at Microsoft, we just released Parallel Extensions to .NET Framework 3.5 Community Technology Preview (CTP) which can be downloaded from here.
Also, at MSDN, there is new section dedicated to ideas, technology, samples and information for developers who are interested in leveraging parallel computing, which can be accessed here.
I could also find this white paper very informative..
Stay tuned.. 
