Don't know. I never received any of the emails, because they were restricted to Europe and Asia and I'm in America. There were threads made that released all the info here early on, but I haven't seen any in quite a while, so I'm beginning to wonder. Maybe they're too busy making stuff to release any new backstage stuff---at least, that's what I'm hoping is the case---or have been filming things and found out later that nobody turned the camera on.
However, Ubisoft did put out a 'Producer Highlight's' video a couple weeks ago.
The backstage program isn't dead. I believe its just there is nothing to announce at this moment in time. To be honest you're best following all media rather than just looking for emails because the For Honor team will give information out via Twitter, Youtube, Facebook and obviously via the backstage program and here on the forums.
Usually you'll find information is sent out via the backstage program after the release of the information from a different source e.g. A Youtube video and then afterwards an email is sent out containing the video.