The update improves focus, HDR and fine-tunes the transition animations.
This is the TD1 firmware, following the earlier TCT update from four days ago.
Samsung has released a number of updates for its Galaxy S20 series. Their focal points have been fixes for the trio’s camera performance, most notably the Galaxy S20 Ultra’s dodgy autofocus. As with all firmware updates they are divided between devices and regions so it may take a bit of time to get to you.