I think a lot of people are coming to the same conclusion @MrsDanversGlidesAgain . It could well be that the accidental leaking of names, at small financial cost, has given MM the perfect opportunity to tell her side of the story, without being heavily criticised for revealing the names in breach of confidence (both her husband's and her father in law's). She will write her book, and it will be successful.
However, that Telegraph article posted above makes me think a lot of journalists are sitting on a lot of information and biding their time. I think if there are further attacks on Catherine and William, the gloves might come off. The Doria/Middletons comment in interesting.
@AutumnCrow dining in a luxury hotel, you say? And various people saying OS was spotted around hotels when he was writing Endgame. And Harry was mysteriously reported to be spending time in a hotel too. As was MM. <scribbling on board> <Wondering if, when the police turn up the crime scene, there will be a locked room in the basement, with wall to wall pictures of Catherine>