There were several announcements at Oculus Connect 6 (OC6) this year that could have taken the top spot. Oculus Link for example or Medal of Honor: Above and Beyond are two worthy mentions, yet it must be the experimental hand tracking feature for Oculus Quest that takes home the crown, especially after testing the technology first-hand.
Hand tracking has always been one of those options that sound nice in principle, but would you actually pay for it, adding a Leap Motion device or something a little more extravagant like a data glove? Some probably would but for the majority,