Looks like Square-Enix just announced this.
The following tracks will be available on Dec. 24 in NA (EU probably the same day), for 0.99$.
Looks like there's even more tracks coming on January 8, but no info given on those for now.
Source
The following tracks will be available on Dec. 24 in NA (EU probably the same day), for 0.99$.
“He of the Name” (Bravely Default)
“Evil Wings” (Bravely Default)
“The Serpent That Devours the Horizon” (Bravely Default)
“Ultima” (FINAL FANTASY XIV)
“Hard to Miss” (FINAL FANTASY XIV)
“Zero” (FINAL FANTASY TYPE-0 ™
“Ardent Rhythm” (Romancing SaGa ® : Minstrel Song)
“Battle #4” (SaGa Frontier)
“Meridian Dance” (Secret of Mana)
“Chrono Trigger” (CHRONO TRIGGER)
“Horizon of Light and Shadow” (Bravely Default)
“Title Screen” (Romancing SaGa 2)
Looks like there's even more tracks coming on January 8, but no info given on those for now.
Source