I just saw the songlist for the game, hot damn...

mint candy☆citrus drop / U.KI
αρχη / Dormir
Dimanche / Orange Lounge
777 / EeL
0/1 ANGEL / v.c.o. Featuring Alt:A.I.TECHNO
New Magical Definition / Oh,la,la!
MY GIFTS / D-crew
BIG-BANG STARS / co-ping
CODENAME : APRIL / TOMOSUKE
High School Love / DJ YOSHITAKA feat.DWP
The cadet of Magic / Dormir
Unbound Mind / D-crew
This is Love / D-crew
I'm Screaming LOVE / Creative Life
HEALEN / positive-MA
DOUBLE TORNARD / evo-X
TRUE LOVE (Clubstar's True Club Mix) / jun feat. Schanita
SUPER HERO / DJ YOSHITAKA feat.Michaela Thurlow
INTO YOUR HEART (Ruffage remix) / NAOKI feat.YASMINE
REACH THE SKY (Orbit1 remix) / TAYA
You are the one / <no artist>
Fly / <no artist>
Only a girl / <no artist>
You made me a woman / <no artist>
Enchanix (Shining so bright) / <no artist>
Stand up / <no artist>
Enchanix / <no artist>


Why wasn't this stuff in DDR X! Who's to say that any of these songs have decent charts, but the IIDX/Pop'n/GFDM crossovers make me jealous.  I don't think this game is ever coming out in the US also, just Europe.