macOS Sonoma 14.8.8 and macOS Sequoia 15.7.8 get a rare fifth RC [U: Public]

Update, 5:38 p.m. ET: Apple has also rolled the public RCs for macOS Sonoma 14.8.8 and macOS Sequoia 15.7.8.

Continuing a lengthy list of release candidates for macOS Sonoma 14.8.8 and Sequoia 15.7.8, Apple is now rolling out RCs 5 for both systems, alongside developer betas 5 for iOS 26.6, macOS 26.6, iPadOS 26.6, and more. Here are the details

macOS Sonoma 14.8.8 and Sequoia 15.7.8 RC 5 now available

Developers testing macOS Sonoma 14.8.8 and Sequoia 15.7.8 can now install the fifth set of release candidate builds, alongside macOS 26.6 beta 5, and its counterparts.

The release builds for today’s RCs are 23J615 for macOS Sonoma 14.8.8, and 24G817 for macOS Sequoia 15.7.8.

Apple has yet to provide any details on what’s included in the systems, beyond the default “important security fixes and is recommended for all users” release notes.

The releases come shortly after iOS, iPadOS, and macOS 26.5.2, which included security fixes Apple had originally planned to ship with version 26.6 but released early because of the risks posed by new AI-powered tools, so it is possible that some of the remaining planned fixes are included here.

To learn more about Apple’s security releases, follow this link.

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