I'm going to take a wait and see approach with Apple's TV service. Especially if it's going to cost money, I would be very hard pressed to subscribe to yet another another service on top of Netflix, Directv Now, and Amazon. However, if the content is made available for free on iOS and tvOS devices, then that is a different story.
I have yet to hear about any shows Apple is working on that sound intriguing/interesting, so I'm a bit hesitant to say the least. Apple certainly has their work cut out for them.