The second round of developer betas for iOS 27, macOS 27, and the rest of Apple’s upcoming operating systems has been issued. You may still want to hold off on installing them.

The march to the fall milestone operating system release is well underway, with Apple continuing to test out its work on them all. After the expected post-WWDC first beta round, Apple’s now moved to its second.

The first developer builds of iOS 27, iPadOS 27, macOS 27, tvOS 27, visionOS 27, and watchOS 27 were made available on June 8.

The second builds are:

• iOS 27 beta 2 is 24A5370h, replacing 24A5355q
• iPadOS 27 beta 2 is 24A5370h, replacing 24A5355q
• macOS 27 beta 2 is 26A5368g, replacing 26A5353q
• tvOS 27 beta 2 is 24J5305f, replacing 24J5289o
• visionOS 27 beta 2 is 24M5306i, replacing 24M5291p
• HomePod Software 27 beta 2 is 24J5305f

At the time of publication, the second watchOS 27 developer beta has yet to surface. This may still change in the short term.

The main changes to the collection include tweaks to Liquid Glass, the long-awaited overhaul of Siri, child-protective features, and many other smaller changes. This time around, it seems to be more of a shoring-up release, focusing on performance and making everything more robust instead of major features, aside from Siri AI.

At your own risk

While AppleInsider and Apple itself usually recommend that people trying out beta software should do so on secondary, spare hardware instead of their mission-critical or daily driver devices, it’s a warning that matters more this time around.

That is because this is Apple’s early developer betas for an operating system that is still actively under development, and therefore there’s a higher chance of buggy, broken, and potentially harmful elements.

It’s a build intended to help developers learn about the operating system changes before the final public release later in 2026. It’s not intended to be used everyday by consumers.

When it comes to the WWDC developer betas, unless you have a vested interest in using them, such as app development, don’t install the early betas.

Members of the public keen to try out iOS 27 on their iPhone should wait until the inevitable public beta. At the very least, wait for a few build cycles to pass so that the big showstopper issues are fixed.

We have experienced when things have gone wrong, and heard countless stories from others when the same happened to them.

Don’t be like us.