Apple has released the update to bring macOS Tahoe to version 26.5, and security updates for Sequoia and Sonoma to bring them to 15.7.7 and 14.8.7.

If you were expecting 15.7.6 or 14.8.6, then you’ll be as surprised as I was that Apple appears to have skipped those and gone straight on to x.x.7. I haven’t seen any explanation for this curious change in version numbering.

Download size for the 26.5 update on an Apple silicon Mac is around 3.8 GB, and the last 5 minutes of preparation takes maybe a tad longer than that. Intel Macs should download around 2.9 GB instead.

In Apple silicon Macs, firmware is updated to mBoot 18000.120.36, while Intel firmware is updated to 2103.100.6.0.0 (iBridge 23.16.15067.0.0,0).

Release notes are the bland and unhelpful statement that “This update includes enhancements, bug fixes, and security updates for your Mac.”

Security release notes are here for Tahoe with around 69 vulnerabilities fixed including more kernel bugs than I’ve ever seen in a single update, here for Sequoia with around 45, and here for Sonoma with a mere 43 or so.

Apple still hasn’t posted any enterprise release notes here but might think of something to report later.

Updated 20:00 GMT 11 May 2026 with firmware info.