It isn’t a new camera system. It’s the same dual 12mp camera setup with F1.8 aperture on one and F2.4 on the other with 2XL zoom.Your saying “typically a S release includes things like a new camera, and we see none of that in the XS”.
But the iPhone XS does a have a new camera system from the iPhone X.
Am I miss reading your comment?
The only thing that changed is in the software.