The latest media app to come to Android TV, in addition to TNT, is EPIX. The update, posted on the third, adds a single change:
EPIX is now available on Android TV
Like other TV Everywhere apps, users need to authenticate with a cable provider before they can take full advantage of the collection of on-demand content that EPIX provides. This includes original TV shows, movies, comedy specials, and documentaries.
Edit: as some comments point out, the app seems to have been accessible for some time. The changelog does specify that Android TV is a new feature though.
Another new feature is EPIX Cast, which should make it easy to cast content from your phone to other devices.
It’s available to download on Google Play.