I believe Yuna is done skating. From her interview she pretty much said that she did not want to be there. She kept repeating how tired she was and how happy she felt that she did not have to train or compete anymore.
That is the impression I got as well. With the back and foot injuries she has had, I have to wonder how much pain she has been skating through. If she has a change of heart, then fine, but I really hope she doesn't come back just because of pressure from her fans/fed. She's earned the right to go do something else for awhile.