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macOS Sequoia 15.4 RC now available, here’s what to expect

Apple has just released new RC (release candidate) betas for its forthcoming software releases, and macOS Sequoia 15.4 is now available as part of this latest batch of updates—both developer and public beta RCs are available.

Apple’s latest Mac update is almost ready for public launch

macOS Sequoia 15.4 introduces a variety of new features for the Mac, with the biggest highlight being a big upgrade to Apple Mail.

There are a variety of other additions too, such as new emoji, the ability to use Macs for Quick Start when setting up new devices, an expansion of Apple Intelligence languages, and more.

Mail app redesign macOS Sequoia

All of those features have been included in prior macOS 15.4 betas.

For today’s beta, however, don’t be surprised if Apple has no new features in store.

That’s because this RC brings us especially close to the public launch of macOS 15.4.

Apple’s expected to ship this update and its companions—like iOS 18.4—very soon. The official stated target is early next month, which could be as soon as next week.

Since we’re so close to public launch, this beta is expected to focus on bug fixes, performance improvements, and stability.

In other words, your Mac should run smoother than before with the macOS 15.4 RC, but it likely won’t be noticeably different in any other way.

That said, if we do find anything new in today’s update we’ll keep you posted.

Have you noticed any changes in the macOS 15.4 RC? Let us know in the comments.

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Avatar for Ryan Christoffel Ryan Christoffel

Ryan got his start in journalism as an Editor at MacStories, where he worked for four years covering Apple news, writing app reviews, and more. For two years he co-hosted the Adapt podcast on Relay FM, which focused entirely on the iPad. As a result, it should come as no surprise that his favorite Apple device is the iPad Pro.