2nd Beta of iOS 18.6 & MacOS Sequoia 15.6 Released for Testing

The second beta versions of iOS 18.6, iPadOS 18.6, and MacOS Sequoia 15.6, are available to users who are interested in running beta versions of the current generation of system software. Most likely that group of beta testers is almost entirely developers, since running betas of the current gen operating systems is not the most thrilling experience. This is particularly true when compared to the concurrent betas of iOS 26, iPadOS 26, and MacOS Sequoia 26, which feature all new interface appearances and a variety of new features.

iOS 18.6, iPadOS 18.6, and macOS Sequoia 15.6 are likely to focus on bug fixes and security enhancements, rather than new features.

The latest beta builds of current gen operating systems can be downloaded through the typical Software Update mechanisms.

For Mac beta testers, go to  Apple menu > System Settings > General > Software Update > Beta Updates > Select “MacOS Sequoia Developer Beta”, and you’ll find the latest macOS 15.6 beta available.

For iPhone and iPad, go to Settings > General > Software Update > Beta Updates > Select ‘iOS 18 Developer Beta’ and then return to Software Update, and you will find the latest iOS 18.6 beta available.

If you’re already running iOS 26 beta or macOS Tahoe 26 beta, then betas for prior generation OS versions will not be available unless you downgrade.

As it’s typical for Apple to go through multiple beta versions before issuing a final release, it seems likely that final releases of iOS 18.6, iPadOS 18.6, and MacOS Sequoia 15.6, could be released to the public sometime this summer, perhaps in July or early August.

Separately, Apple has said that iOS 26, iPadOS 26, and MacOS Tahoe 26, will be released in the fall of this year.