Update, November 5: Apple has released the first release candidates of macOS Sequoia 15.8.3 and macOS Tahoe 26.7.3, making them available to public beta testers as well as developers. The rollout arrives alongside macOS 27.3 beta 1 and continues Apple's support for older versions of its desktop operating system.
The release build for macOS Sequoia 15.8.3 is 24H314, while macOS Tahoe 26.7.3 carries build 25G416. As usual, Apple's release notes only state that "this update provides security fixes for your Mac," with details about the specific vulnerabilities addressed expected to be published once the updates are officially released. Just last week, Apple issued macOS Sequoia 15.8.2 and macOS Tahoe 26.7.2, which addressed more than 150 security vulnerabilities.
Separately, the first developer beta of macOS 27.3 introduces several new Safari features, including Vertical Tabs, Adaptive Dark Mode, and Siri AI Custom Actions, and may also bring support for additional Siri AI languages, including Traditional Chinese, Norwegian, Turkish, and Vietnamese. Did you spot anything new in today's betas? Let us know in the comments.
Source: 9to5Mac · Summarized by HeadlinesBriefing