It doesn't really matter if people have beaten it or not. Releasing the trailer is fine. Honestly, if they haven't beaten it.... Unless people say something, who's to say it's part of the final coil end animation?
It's a cool story, and releasing this trailer might wet some peoples appetites to go wipe in turn 13 so they can watch/read the whole story. Because, that extra part released today is just a taste really. If SE is saying something by letting out this sort of mini spoiler, it's to go play coil some more, while it's still something people are gonna do. Certainly, after the xpac is out, much less people will be doing it.... lol That's just a couple weeks away! (6-7 weeks right?)
Turn 13 is much well within grasp for people than it was when released. Gear/hp/accuracy cap should be much less of a issue and more people know how to beat it now. It's certainly not easy for most, but it's a fun endeavor that one can definitely meet some friends while getting there. If it was super easy, it would be less satisfying to finally beat it. It's more about the journey than the destination right? It might be a long trip sometimes, but it's a excuse to play with friends.
