From what I've heard from the trailers, the music sounds pretty okay, but you can't expect a masterpiece I guess.
https://www.youtube.com/watch?v=F_DaAa8h7A8
An orchestral version of "Meridian Child"
https://www.youtube.com/watch?v=K7KXJOYWCYw (starting at 5:20)
Some BGMs like "Closed Garden", "Walls and Steel", "Powell", "Ordinary People", etc. I think the music here really sticks close to the original and isn't as experimental as SoM's remake. But those are just short snippets. I just hope they don't do the same mistake again :/
Maybe Kikuta arranges solo this time? The music here really sounds simple enough, as it seems just "upgraded" with better synth quality (like they did with Kingdom Hearts 1.5 Remix)
I wish they would use more live instruments here and there, like with Kingdom Hearts 2.5 Remix!