Apple's four-speaker surround setup needs Apple TV 4K (4th generation) and four HomePod mini 2 or HomePod (2nd generation) speakers. Here is what it costs.

Not every Apple gizmo is capable of receiving the new ’27 operating system.

The Apple TV 4K is equipped with Apple’s A19 chip, which Apple says delivers up to 50 percent faster CPU performance and up to twice as fast GPU performance as the previous generation.