Preview at WWDC likely in June, followed by September launch.
Apple Releases Redesigned 'Apple TV Remote' App for iPhone
The new Remote app, which connects to an Apple TV via Bluetooth, mimics the exact layout of the physical Siri Remote for a navigation experience that's streamlined across different input methods. Its design was inspired by the Siri Remote and is a significant improvement over the previous Apple TV remote app.
When content like movies or music plays, the Remote app features a full "Now Playing" view for control purposes, along with a dedicated Menu button and a Siri button. As with the physical Apple TV Remote, navigation through the iOS app is done using touch gestures.
Entering text, like passwords and usernames, is much easier with the iOS Remote app because any text field automatically brings up a keyboard. Full Siri voice commands are supported, as is dictation. Because it includes the same gyroscope and accelerometer in the Siri Remote, an iPhone can be used as a dedicated game controller for playing games on the Apple TV.
The Apple TV Remote app requires iOS 9.3.2 or later to install and it works with the current version of tvOS, 9.2.2. It can also be used to control Apple TV 2 and Apple TV 3 models.
The Apple TV Remote app can be downloaded from the App Store for free. [Direct Link]