Apple has released macOS Tahoe as the new major version, but many users are still seeing Sequoia updates like 15.6.1 (and now 15.7) in Software Update. That mismatch is what’s driving today’s searches.
What’s going on
Apple runs a dual-track rollout: the big annual upgrade (Tahoe) plus security point-releases for the previous version (Sequoia). On day one, both can ship together.
Plenty of Macs don’t jump to a major release immediately. Older Intel models may be ineligible, and many workplaces deliberately hold major upgrades for testing. Those machines will only get Sequoia patches for a while.
Software Update can also surface the Sequoia patch first. Caching and staged availability mean Tahoe may appear after an extra refresh or a short delay.
What you should install
If your Mac supports Tahoe and you see it offered, upgrade to macOS 26.
If you’re staying on Sequoia—by choice, compatibility, or policy—install the latest Sequoia update (15.7 supersedes 15.6.1) to stay secure.
Quick answers
Why do I see 15.6.1 instead of 26.0? Your Mac is being offered the current Sequoia patch first, or your admin has deferred major upgrades.
Is 15.6.1 safe to skip? No. If you’re on Sequoia, install the latest security update (15.7 if offered). Then move to Tahoe when eligible.
Will all Intel Macs get Tahoe? No. Some older Intel models remain on Sequoia and will only receive its security updates.
