In the Letter from the Producer LIVE Part X, Yoshida mentioned that each patch will focus on a specific race along with opening other race's hairstyle options.

Q: Will there be more beauty salon options added in the future?
A: We'll be placing the spotlight on a particular race when we introduce more hairstyles each patch. You'll be able to select hairstyles from other races as well.
While patch 2.1 introduced new hairstyles for Roegadyns, we'll continue adding more hairstyles for other races and the ones added recently will be selectable for other races in the next patch.