Apple Seeds Fourth Beta of tvOS 12.1.1 to Developers [Updated: Public Beta Available]
Apple today seeded the fourth beta of an upcoming tvOS 12.1.1 update to developers for testing purposes, two weeks after releasing the third tvOS 12.1.1 beta and a month after releasing tvOS 12.1.
The new tvOS 12.1.1 developer beta can be downloaded onto the Apple TV via a profile that's installed using Xcode. Subsequent betas can be downloaded over-the-air.

We're not yet sure what fixes and changes the tvOS 12.1.1 update might bring, but it's likely to focus on bugs that were not able to be addressed in the tvOS 12.1 update.
Apple provides little information on its tvOS software and tvOS updates have historically been minor in scale, so we may not know what's included in this update. Despite the lack of info Apple offers, we continue to share updates on tvOS beta releases so that developers and public beta testers are aware when new content is available to download.
Nothing new was discovered in the first three tvOS 12.1.1 betas, but we'll update this post if any new features are found in the fourth beta.
Update: Apple has also made a new beta of tvOS 12.1.1 available to public beta testers.
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