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No third party and only some Apple apps are available on the developer kit Apple TVs except the basics. The full list: movies, TV shows, photos, music, search, computers (home sharing), settings and TestFlight. We'll have to wait and see what the production version of the OS looks like in the next couple of days.
 
No third party and only some Apple apps are available on the developer kit Apple TVs except the basics. The full list: movies, TV shows, photos, music, search, computers (home sharing), settings and TestFlight. We'll have to wait and see what the production version of the OS looks like in the next couple of days.

I'd like to see HBO Nordic.
 
I also had this question, and I hope HBO Go is available. I am encouraged that the introductory video for the new Apple TV includes an icon for it (see attached screen shot), and by the fact that Eddy Cue said during the September keynote that we would have access to all of the currently existing apps. But we'll just have to wait another few days to be sure.

Screen Shot 2015-10-28 at 7.47.07 PM.png
 
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