Multivew on Apple TV 4K lets you watch four simultaneous matches at once, quickly switch between quad-screen, split-screen and fullscreen views, and so on.
Apple TV 4K gains the multiview feature for watching four simultaneous sports streams
tvOS 16.5
tvOS 16.5 brings multiview and enables Thread 1.3 support on your Apple TV
tvOS 16.5 brings two new features to your Apple TV: The ability to watch four sports streams simultaneously and support for the updated Thread 1.3 standard.
Apple testing Multiview picture-in-picture that supports four streams at once
The upcoming Multiview feature boosts Apple's picture-in-picture mode, and you'll especially like it when your favorite teams are playing at different times.