It is available as a ring tone, full song download, and calling tone (what people hear when they call you).
There is a special album art that is attached to the song and shows in the Lismo Player. (will try to upload the song and photo when I get home from work)
This is available for people who use AU only!!!
It seems like all other phone users may be able to get the song after 11/5 when the Single is officially released.
This song is the B-side of 「Beautiful Days」