This new feature hides your IP address & hides your location & hides if u have opened your mail.
In Safari now it also hides your IP address and location.
In this new way, it gives u a report on how they treat your privacy, and to see what date & time u were tracked. U can see all the 3rd party apps too.
Siri Privacy has gotten better because it does all this on the Natural engine, or on-device & u can use Siri offline now.