And all of the content is available for offline download - including HBO's entire catalog.
The new Channels offering on Apple's redesigned TV app (available on iPhone, iPad, and Apple TV) is basically like a home base for all of your subscriptions - including HBO, Starz, Showtime, Smithsonian Channel, EPIX, Tastemade, CBS All-Access, and MTV Hits - except you don't need separate log-in credentials for each one.
HBO, which joins basically every other streaming service and channel (besides Netflix) on Apple's new Apple TV Channels, has also made offline downloads available for the first time ever. And there's yet another streaming giant whose content was recently made available for offline viewing.