New Apple TV hardware referenced in tvOS 13.4 beta code

Yesterday, Apple released the first developer betas as part of its next round of software releases: iOS 13.4, iPadOS 13.4, macOS 10.15.4, tvOS 13.4, and watchOS 6.2. Inside the tvOS 13.4 beta code, 9to5Mac has discovered references to new Apple TV 4K hardware.
Apple TV 4K and its Siri Remote
On September 12, 2017, Apple announced the 5th generation Apple TV, named Apple TV 4K, which supports 2160p output, HDR10, Dolby Vision, and includes a faster Apple A10X Fusion processor supporting HEVC hard