Some people have asked what they should do to support IDNA2008 on Microsoft platforms. We provide IdnToAscii() and related functions in the Windows SDK. That’s available natively on Vista+, and through idndl.dll on earlier platforms. Idndl is shipped with IE 7, or through “Microsoft Internationalized Domain Names (IDN) Mitigation APIs” at the Microsoft Download Center….
If you go to http://msdn.microsoft.com/en-us/vstudio/dd582936.aspx there’s now a Visual Studio 2010 and .Net v4 beta page. The betas are a good place to learn about new releases and provide feedback. -Shawn