....and it's not who you think! It's Noriyuki Iwadare... hmm, to tell you the truth, the only soundtrack of his I liked was Warsong/Langrisser 1 on Genesis, I much prefer Sakuraba even though it seems like he scores every other RPGs these days.
I am pleased with this news. Although it is a little strange a tri-Ace game won't have a Sakuraba score attached to it, I still listen to the Grandia and Grandia II soundtracks, they are awesome!
Even if Sakuraba is not composing the music (which is strange, as the trailer features Mission To Deep Space; one of his tri-Ace mainstays), I'm sure he's involved in the sound programming somehow.