The top of the touchpad is now transparent so the light bar shines through on the touchpad. No word on other changes but it confirms that the DS4 is being updated alongside this revision. This guy is going to keep drip feeding updates, it seems.
https://www.youtube.com/watch?v=RDFbLGEky8g
https://www.youtube.com/watch?v=RDFbLGEky8g