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Developers testing software on the new fourth-generation Apple TV were given access to a new tvOS 9.1 beta on Wednesday, the third pre-release build issued thus far.
Those with a registered Apple TV can now download the latest beta via the system's software update, or install it over a USB-C cable connected to a Mac.
Testers have found that tvOS 9.1 adds support for Siri searches in the Apple Music service. Apple itself has said that the functionality will be available to users early next year, potentially suggesting that tvOS 9.1 remains far from release.
Digging around in the tvOS code, developers have also found evidence of support for app folders. As of yet, folders are not available in tvOS 9.1.
Without an Apple TV public beta program, tvOS 9.1 remains limited to developers. The latest public release for the fourth-generation Apple TV is tvOS 9.0.1.