A few months ago we added the XML Schema Explorer to the SP1 Beta release and are happy to announce that this week we've shipped with the .NET Framework 3.5 SP1 and Visual Studio 2008 SP1 RTM release.
As previously stated, the XML Schema Explorer illustrates our initial thinking about the future of XSD tools from Microsoft. Over the next few months we'll be communicating our additional tools plans for XSD, including when you'll be able to get your hands on upcoming bits.
Please send us your comments, questions, and suggestions via the XML and the .NET Framework forum on MSDN here.
Program Manager, XML Tools