Perfect, this will work well with the new Apple TV 4th generation coming out at the end of October!
Oh wait, it's 2016. This is the app we should have had at launch. It's been fun paying Apple several thousand dollars to be a beta tester the past few years.
You obviously haven't used Apple products for long or you're very forgetful... OS X launch anyone. Ouch, now that was Beta testing.
Apple rarely gives a full set of wanted/desired features with their products straight off the bat. Just look at the iPhone too, no native apps, no cut/copy/paste, no 3G etc.
A general rule of thumb for tech in general, buy when a product matures up to a point where it meets your needs. Luckily I have very little need for the iPhone app and have been enjoying the AT4 for a number of months, so I'm glad they didn't hold it's release back waiting for this app.
http://www.macworld.com/article/1151235/macs/apple-rolls.html