The reason why they decided to remove ultrasonics is that combining contradictory signals from cameras and ultrasonic is not straightforward. What should have the higher precedence? So they ultimately decided that cameras can do what ultrasonics can do, but even better.
They won't remove ultrasonics from the delivered cars, but they will probably disable them in coming months.
They won't remove ultrasonics from the delivered cars, but they will probably disable them in coming months.