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Today is the official release date for the public versions of iOS 18, iPadOS 18, macOS 15 Sequoia, and a scad of other Apple software updates, the foundation that Apple will use for Apple Intelligence and whatever other features it wants to add between now and next year's Worldwide Developers Conference in June. But for those who value stability and reliability over new features, you may not be excited to update to a new operating system with a version number ending in "0."

For those of you who prefer to wait for a couple of bugfix updates before installing new stuff, Apple is also releasing security-only updates for a bunch of its (now) last-generation operating systems today. The iOS 17.7, iPadOS 17.7, and macOS 14.7 updates are either available now or should be shortly, along with a security update for 2022's macOS 13 Ventura. An updated version of Safari 18 that runs on both macOS 13 and 14 should be available soon, though as of this writing is doesn't appear to be available yet.

Apple has historically been pretty good about providing security updates to older macOS releases—you can expect them for about two years after the operating system is replaced by a newer version. But for iOS and iPadOS, the company used to stop updating older versions entirely after releasing a new one. This changed back in 2021, when Apple decided to start providing some security-only updates to older iOS versions to help people who were worried about installing an all-new potentially buggy OS upgrade.

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The macOS 15 Sequoia update will inevitably be known as "the AI one" in retrospect, introducing, as it does, the first wave of "Apple Intelligence" features.

That's funny because none of that stuff is actually ready for the 15.0 release that's coming out today. A lot of it is coming "later this fall" in the 15.1 update, which Apple has been testing entirely separately from the 15.0 betas for weeks now. Some of it won't be ready until after that—rumors say image generation won't be ready until the end of the year—but in any case, none of it is ready for public consumption yet.

But the AI-free 15.0 release does give us a chance to evaluate all of the non-AI additions to macOS this year. Apple Intelligence is sucking up a lot of the media oxygen, but in most other ways, this is a typical 2020s-era macOS release, with one or two headliners, several quality-of-life tweaks, and some sparsely documented under-the-hood stuff that will subtly change how you experience the operating system.