Quote Originally Posted by YianKutku View Post
It's a miraaaaage.

An exceptionally detailed one, but a mirage nonetheless.

Just a miraaaaage.

(More seriously it's probably a bug. Would be cool if it's not and there's lore behind it, though.)
It is most likely this. Ships IRL can have this happen to them. You're out on a cruise and see a ship in the distance and see it floating on the horizon. But the most logical answer is in game bug. I mean it happens. If it turns out to be future content then I will say SE has done a good job making us all curious about it!