Now you can use WCF in production:
 
"Microsoft today announced the availability of Go Live licenses for Windows Communication Foundation and Windows Workflow Foundation technologies. Along with the WinFX January Community Technology Preview, these new resources are meant to give millions of .NET developers a leg up on next-generation application design. All three releases are available now from the MSDN Download Center. " http://www.irishdev.com/NewsArticle.aspx?id=1739