Apple has released tvOS minor update 9.1.1 for the 4th generation Apple TV. It mainly focuses on under-the-hood improvements but also includes a new Podcast app.
Apple tvOS 9.2 will include new features like support for Bluetooth keyboards, app folders, an updated app switcher, and more. It is still in Beta with developers and should be released in a couple months or less.
The new 9.1.1 update can be downloaded over the air through the Settings app on the Apple TV by going to System –> Software Update. Those who have automatic software updates turned on will be upgraded to the new 9.1.1 operating system automatically.