i'm not sure if this has been poster already. i searched & couldn't find anything on it, so i supose it hasn't. gomen nasai, if it has.
http://www.tv-asahi.co.jp/music/html/f_02_coming.html
Ayu will be performing "Greatful days" on Music Station July 4th.
We'll get to hear the song pretty soon! Thanks to nmskalmn for the
link.
Credits - ayu-mi-x forum [Grantith] & nicky from BalladsAYU