Took it today and passed it. I don't know if I am one of the first 200 to pass it or not, which would make me a Microsoft Desktop Optimization Pack (MDOP) Charter member, but we'll see.
Since a good majority of the test focuses on Softgrid aka Microsoft Application Virtualization, I thought I had a pretty good shot at passing the exam. I have a decent background in streaming applications with Softgrid and Citrix.
My weak spots on the test were in the Asset Inventory Service and the Desktop Error Reporting sections, because I haven't dealt with those programs as much as I have Softgrid and the Diagnostic and Recovery Tool (DaRT - the updated and renamed ERD Commander).
If you are wondering what I am talking about, you can check out the exam details
here, and learn about MDOP
here.