Okay, here's the picture of Yuna's feet in the Jump Festa trailer from awhile ago. They put that trailer on the website about a week ago, as a Christmas Eve present. And yes, they did confirm that it is Yuna. That's all we know at the moment; that DEM FEET belong to Yuna, and that she is in the game. We don't know if she's a summoner or songstress or anything like that. Oh yeah, and FFVII's "J-E-N-O-V-A" has been confirmed as a song.