Sixth release candidates for macOS Sonoma 14.8.8 and macOS Sequoia 15.7.8 now rolling out

Apple is rolling out a sixth round of release candidates for macOS Sonoma 14.8.8 and macOS Sequoia 15.7.8, with build numbers 23J619 and 24G822 respectively. The updates are expected to include important security fixes, following Apple's recent acceleration of security patches due to risks from AI-powered hacking tools.

In what must be a record, Apple is now rolling out a sixth round of develope and public release candidates for macOS Sonoma 14.8.8 and macOS Sequoia 15.7.8. Here are the details. macOS Sonoma 14.8.8 and Sequoia 15.7.8 RC 6 now available If you thought RC 5 for macOS Sonoma 14.8.8 and macOS Sequoia 15.7.8 would be the last release candidates before the official updates, Apple apparently had yet another one in store. The company is now rolling out a sixth RC for both operating systems, which are likely to include important security fixes, given their timing. Apple recently released iOS, iPadOS, and macOS 26.5.2 with fixes originally planned https://9to5mac.com/2026/06/29/apple-accelerates-security-updates-in-response-to-ai-powered-hacking-risks/ for version 26.6, bringing them forward because of the risks posed by new AI-powered tools. 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 release builds for today’s RCs are: The release builds for today’s RCs are: - macOS Sonoma 14.8.8: 23J619 - macOS Sequoia 15.7.8: 24G822 To learn more about Apple’s security releases, follow this link https://support.apple.com/en-gb/100100 . Worth checking out on Amazon Wireless CarPlay adapter https://www.amazon.com/gp/product/B0F6T6N2B1?tag=marcmendes-20 Geoffrey Cain – ‘Steve Jobs in Exile’ https://amzn.to/4v3CS5Q David Pogue – ’Apple: The First 50 Years’ https://amzn.to/46Y3nQj MacBook Neo https://amzn.to/47vJmkn Logitech MX Master 4 https://amzn.to/3KmIQN7 AirPods Pro 3 https://www.amazon.com/Apple-Cancellation-Translation-Headphones-High-Fidelity/dp/B0FQFB8FMG?tag=marcmendes-20 AirTag 2nd Generation – 4 Pack https://amzn.to/4sewc3a Apple Watch Series 11 https://amzn.to/46VomDB FTC: We use income earning auto affiliate links. More. https://9to5mac.com/about/ affiliate our homepage http://9to5mac.com/ for all the latest news, and follow 9to5Mac on exclusive stories https://9to5mac.com/feature/exclusive/ , reviews https://9to5mac.com/guides/review/ , how-tos https://9to5mac.com/guides/how-to/ , and subscribe to our YouTube channel https://www.youtube.com/9to5mac