Yes, I know. It was really only paraphrase to your title with "WCF id dead...", so I wrote "WCF is not dead" :) And it's true that sometimes it happens that comments are more interesting finally. If people don't agree, the writer answers and exaplains and then it goes deep into problem.
I understand the title of your post to be a little provocative, isn't it? :)
INPCinterface, it can raise the error directly, thus it must have a
propertyName: stringparameter notify method. After my ugly workaround things work well with Fody.