WCF compatible versions

Will the most recent version of the WCF ( in WinFX runtime version 3.0.3906.22 -- on XP) work with the current release of Atlas? Or, must I use the February CTP?

Thanks,

Jack

I have found that Atlasdoes notsupport the May CTP release of WCF. This is because the ServiceHostFactory class has been moved from System.ServiceModel namespace to System.ServiceModel.Activation namepsace. So the Microsoft.Web.ServiceModel is broken.