Unless there's some news tidbit I overlooked, this game (http://grancrest.bn-ent.net/) did make its scheduled release date of 14 Jun. The limited edition's (Play-Asia.com purchase (https://www.play-asia.com/record-of-grancrest-war-limited-edition/13/70bxtj?affiliate_id=1076257&tagid=1076257)) extra contents include a soundtrack CD (VGMdb entry (https://vgmdb.net/album/76391)) which would not be an unwelcome addition to the collection.

Note that this is not to be confused with the mobile game (https://grancrest-sp.bn-ent.net/), some of whose music can be found here (https://www.youtube.com/channel/UCrs7AJGl517hRfZZJAvbotg/videos).

I'm searching for the PS4 soundtrack too.