Custom Notification Sounds

Are we going to see in the near future, custom notification sounds? I know one option would be to jailbreak the Apple Watch when a jailbreak is released, however in my experience jailbreaking iOS device always leads to some kind of functionality problem, whether it be the phone doesn't ring when it is supposed to or it randomly resets or resprings when there is a software problem because of the jailbreak. I would really like to change the tone on the Apple Watch that I hear when a notification is received.