我尝试了新开发中心提供的工具包，除了XNA插件外，它还有效。在摘要中，您可以开发Silverlight应用程序，但尚未开发XNA。

I tried the toolkit which is available in the new Dev Centre and it worked except for XNA plugins in it. In a summary, you can develop Silverlight Apps, but no XNA yet.