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That's some damn pretty CG, but they weren't exactly straining to make up a title this time I see. Like all the other "complete" soundtracks, it's one of those exclusive Sega Direct specials, priced 3,400 yen. It should already be out now (was released yesterday too, according to SSUK at Sonic CulT who translated all of this info).
And a shameless promo shot from the masterminds:

^ Ogawa at left and Whatshisface Kishimoto at right, I presume.
Also being shown off on the Famitsu source page are OSTs to Puyo Puyo 15th Anniversary and Shining Force EXA if that strikes your fancy.