Article: Makato Asada from CAVE confirmed at TGS that this Xbox360 game will be region free, as a test in order to see how many overseas customers will import this product.
Thus sales of this product will decide the fate of whether Cave will opt to make future games region-free or not.
Play-asia has a preorder page for the
LE package which includes this 2-cd album listing here at vgmdb.
(at least we'll have a game to play when spending $100 to hear the Arranged discs.)