Faenwynn

Are the OSTs published on Obsidian Youtube channel (Fibonacci, Boarst Rockets) not included in the premium version of the game? Those songs were the main reason I ordered premium version, since I saw that it came with OST included. Are there plans to add them later at least? Also, are you gonna make the OST a separate steam entry as with Avowed instead of accessing it through some launcher in Artbook folder?