Web Services Enhancements 3.0 final release version is now freely available for download. WSE 3.0 will work with both Visual Studio.NET 2005 and the .NET Framework 2.0. However, it will not work with Visual Studio.NET 2003 and .NET Framework 1.1.
I really like the fact that existing using WSE 2.0 Web Services will continue to work after installing WSE 3.0. In fact both WSE 2.0 SP3 and WSE 3.0 can be installed side by side for .NET Framework 2.0 applications.