Third tvOS 17.3 developer beta is out now

The third developer beta of tvOS 17.3 has been seeded by Apple, and can now be tried out by testers.

Developers taking part in the test program can access the latest build by visiting the Apple Developer Center, or by updating any Apple TV set-top boxes that are already running the beta. Public beta versions usually surface a short time after the developer counterparts, and the public can sign up to test them via the Apple Beta Software Program when they become available.

The third tvOS 17.3 developer beta arrives after the second, which was issued on January 3, while the first landed on December 12.

The third beta of tvOS 17.3 is build number 21K5643b, replacing the second, 21K5635c.

While iOS and watchOS updates usually have more visible changes, tvOS usually has more background changes, performance improvements, and bug fixes rather than features. While it is possible that there are some notable changes in the operating system, they surface relatively rarely.

AppleInsider and Apple strongly advise users don't install beta operating systems, or beta software in general, on to "mission-critical" or primary devices, as there is the chance of issues that could result in the loss of data. Testers should instead use secondary or non-essential hardware and ensure they have sufficient backups of their critical data at all times.

Find any changes in the new betas? Reach out to us on Twitter at @AppleInsider or @Andrew_OSU, or send Andrew an email at andrew@AppleInsider.com.