The devs recently teamed up with their pal CohhCarnage on Twitch to showcase "an all-new introductory story designed to demonstrate Pantheon's major features in a fully playable experience." This finally allowed them to show (rather than just tell) what Pantheon actually is. For your convenience, I've condensed all of the highlights from that 2+ hour stream down into a 15 min summary: https://youtu.be/KfFFDNeiLr0