Well maybe…
iOS 15 b3 on iPhone 12 Pro Max. In Zoom you can normally use backgrounds or blur. In iOS 15 it adds portrait video in Facetime that enables a blurred background.
Now in Zoom you can open control center and select Video and enable Portrait Video. Just like in FaceTime (a blurred background) but in a 3rd party app.
Imagine is 3rd parties had the ability from Apple to enable this on the rear facing camera!

