Hello Jonathan Miller,
Well, the WPF controls have been officially released with our Q2 release and people have been using it in production since mid-July. As I am typing this message, we are uploading the WPF controls first service pack release that adds a couple of minor features and several bug fixes.
As far as the Silverlight suite is concerned, we will be shipping the official release after Microsoft releases Silverlight 2.0 officially. That means that the suite will be released with our Q3 release that is scheduled in early November. For details on what we are working on for Q3, check our WPF
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