Some more info about the album was posted at Yeah!! J-pop. None of this is official, consider it rumor for now:
"A Ballads" may not be the final title.
There will be 14 tracks.
Some of the tracks will be re-recorded.
These songs might be on the album:
"YOU"
"A Song for xx"
"TO BE"
"appears"
"Who ..."
"SEASONS"
"Key-eternal tie ver.-"
"M"
"Dearest"
"HANABI"
"Voyage"
"Dolls"
http://www.j-pop.ne.jp/