According to CD JAPAN, BoA is releasing her 24th Single in December the 12th. This single will include Smile Again, the “famous” ballad!
CD JAPAN quote:
New single release features a fresh and edgy dance sound. Also includes the B-side “Smile Again,” a ballad number that appears as the theme song to the TV Asahi “Doyo Wide Gekijo” program.
Source: CD JAPAN
ps: I’m sorry, I’m extremely busy, exams are hitting from everywhere!!