In addition to that, they also seems to be testing a version which completely disables access to some content to users which are not logged in - it simply says

In addition to that, they also seems to be testing a version which completely disables access to some content to users which are not logged in - it simply says that you can only view it in the app. Logging in does allow you to view it on the web, but that's still a pretty horrible thing to do!