Borislav Slavov remains the main composer in Larian, so i guess he will be the head of upcoming soundtrack, which is nothing wrong because he's a great composer and i am sure he will create a breathtaking songs for BG 3 universe.
I liked a lot his soundtracks to Crysis games and D:OS 2, of course D:OS 2 soundtrack is different than BG 1 and BG 2 because Divinity franchise requires this, but while composing for BG 3 he's gonna surely catch the spirit of previous BG games.
Lets just wait and see how it goes
