I just got these from one of those new pirate quests, are these newly wearable or what?

There's none listed under Trade post, or shop search. And there's no label for them, they're not special, retired, etc.

Any ideas? Did they just decide to release them?

Huh, that's weird. Melody Own Boots is supposed to be a NPC-exclusive item. Maybe it's a bug? o_O

That's what I thought, but I can put them in my wardrobe and wear them.

Maybe they released them? I don't know.

It's a NPC item. Please delete it, make a ticket, and a UA will help you get the item you spent on the quest back.

Okay, that's good to know, thanks c: I just deleted it, gonna submit a ticket now.