The Korean fs fandom is already freaking out about this . From what I understand most of them also believe Yuna will skate. But personally will not hold my breath about this tbh.
Watch her sing instead in this event
Well given that skating is the reason why Yuna's famous, it's not surprising plus it doesn't help that the verb used to describe what she will be doing is quite ambiguous. The only thing it guarantees is that she will appear on the stage. Today other articles have been published saying that it hasn't been decided what form her appearance will take, so singing is not out of the question though I don't think it's what she will do. It sounds a bit like she decided this on the spur of the moment, but I honestly think the Korean domestic audience will be happy enough just to see her come out in a pretty dress and do her thing on the rink, whatever it turns out to be.