UniqueMe jumped the gun and published a Nokia 9 case on Amazon UK. This isn't the first case for the upcoming flagship, but it's the first one to appear in a store. It has enough holes for the 5 camera array (plus flash). Notably, there's a hole missing - one for the fingerprint reader. The Nokia 9 will reportedly have an in-display reader, so that makes sense. Unfortunately, the only image available doesn't offer a good look at the bottom. That's certainly a USB-C port in the middle, but what about the holes on each side? The renders we've seen previously didn't show a 3.5mm...
Source: https://www.gsmarena.com/case_for_nokia_9_appears_on_amazon_has_enough_holes_for_5_cameras_and_a_flash-news-34400.php