WSE 3.0 July CTP
La trovate qui: http://www.microsoft.com/downloads/details.aspx?familyid=77ae2e71-c5eb-4c4d-b24d-c6c289b49a95&displaylang=en
Web Services Enhancements 3.0 July CTP for Microsoft®.NET (WSE) is an add-on to Microsoft Visual Studio® 2005 and the Microsoft.NET Framework 2.0 that enables developers to build secure Web services based on the latest Web services protocol specifications.