It's already there in the iOS code, so it's definitely happening:
This corresponds perfectly to the notch form we know and love/hate.
UIStatusBarSplit
BottomRadius <- What is up with this? Is there a cutout for the virtual on-screen home button maybe?
Either way, the current leaks surrounding this just don't make sense. Still have yet to hear anyone make even a logical rumor as to how it would work in a human-friendly way...
It would make more sense if the status bar was completely disconnected from the screen... like the touchbar of the new macbook where its "cut out" from the face of the display (not from the display/screen itself, say the shape of a rectangle that extends the width of the screen, with the actual rectangular display/homescreen below it... that would make more sense than the way it is now.
As the code comments show, there is nothing there that says anything about a "right" or "left".