Apple has confirmed on its Requirements for Siri AI support page that tvOS 27.2.1 will bring Siri AI to Apple TV 4K models from the second generation onwards. Until now Siri AI has been limited to the newest Apple TV 4K, which ships with tvOS 27.2.
The page lists the requirement as tvOS 27.2.1 on Apple TV 4K (2nd generation and later) and a Siri AI-enabled, paired device nearby. In practice, the Apple TV leans on a compatible iPhone or other Siri AI device in the room. The same page names iPhone 15 Pro and later among eligible iPhones.
Apple has not said when tvOS 27.2.1 will arrive or whether it contains other changes. The support page is not region-specific, but Siri AI language availability still varies by country, so owners outside the US should check Apple’s language list before expecting the feature on release day.