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Thanks to IT Home readers lous, 愚公骑马, 对的时间点, and tangkin for the tips!
IT Home reported on November 14 that tech outlet MacRumors published a post today (November 14) saying Apple has released tvOS 27.2.1 and HomePod Software 27.2.1, both with the internal development code 24K157.
The biggest highlight of the tvOS 27.2.1 update is that Apple is bringing Siri AI support to the second- and third-generation Apple TV 4K. Users of these devices can get this voice assistant upgrade without replacing their hardware with a newer model.
IT Home provides the update notes below:
This update brings a more capable and conversational Siri AI to Apple TV 4K. It also adds the ability to connect up to four HomePod speakers to Apple TV 4K (fourth generation), and includes bug fixes and security updates.
Siri AI
A more capable, more conversational version of Siri helps you find what you need and get more done.
Improved search helps you discover the perfect movie or TV show in the Apple TV app, with a new, rich, full-screen experience.
Personal context understanding uses your Apple Intelligence-compatible iPhone to help you find what you want.
Broad world knowledge lets you ask about almost any topic and get detailed answers.
On-screen awareness answers questions about what you are watching on Apple TV, so you can ask when the next season will air while your favorite show is playing.
Siri AI on Apple TV 4K is available in English and requires an iPhone or iPad that supports Apple Intelligence for setup.
Home Theater
Home theater surround sound supports connecting four HomePod speakers for an immersive, multidimensional listening experience.
Whole Room Audio distributes sound evenly across four speakers, making it ideal for parties or game day.
Requires Apple TV 4K (fourth generation) and front and rear pairs of HomePod mini 2 or HomePod (second generation).
By comparison, according to the source, the HomePod 27.2.1 update is more limited. Apple's release notes say only that the update provides bug fixes; it does not add Siri AI.