Another post on
www.theserverside.net :
http://www.theserverside.net/news/thread.tss?thread_id=38592
Microsoft has released the January CTP of WinFX which includes a Go-Live license for WCF and WinWF. This release has no changes for WPF and a Go-Live license is not included for that technology. Download includes WinFX Runtime Components, WinFX SDK, Visual Studio Extensions for Workflow, and Visual Studio "Orcas" CTP Development tools for WinFX.
Info about this stuff on MSDN: http://msdn.microsoft.com/winfx/getthebeta/golive/default.aspx
Or go straight to the download on MSDN: http://msdn.microsoft.com/windowsvista/getthebeta/default.aspx