As of 1:00 a.m. EST today, the Final Fantasy XIV servers started the game's final event before the relaunch. At 3:00 a.m. EST, they shut down. Immediately following the shutdown, the last trailer for the game's current version was posted, showing the outcome of the final battle against the forces of the Garlean Empire by the unified Grand Companies of Eorzea. And if you've been following the game's story in any fashion, you'll probably want to see how it all ends.
It's worth noting that the cutscene is both fairly long and lacking in context -- if you don't know the most recent lore of the game, you're not going to catch everything that's going on. But if you've been watching the final defense of the Eorzean city-states from inside the game or on the sidelines, you deserve a front-row seat for the last clash of armies. And even though you know how it ends, it's still going to pack a punch.