As of today, a fifth beta of the upcoming macOS High Sierra 10.13 software update is available to the registered Mac developers and members of the Apple Developer Program.

We’re expecting it to roll out to public beta testers within the next 24 hours.

An over-the-air macOS High Sierra beta 5 (build number 17A330h) download is available through the Mac App Store’s Updates tab. The full installer can be grabbed from Apple’s Dev Center portal for developers.

High Sierra introduces new core storage, video and graphics technologies.

There are outward-facing changes, too, starting with an improved Photos app featuring a persistent navigation sidebar, curve-based editing for precise control over the tones in an image, support for editing in external apps such as Pixelmator and Photoshop and more.

FaceTime, Messages, Notes and other stock apps have received subtle refinements.

Released as a developer-only preview at WWDC, macOS High Sierra also includes a new Apple File System, High Efficiency Video Codec (aka H.265), an updated Metal graphics framework with support for VR apps and external GPU enclosures, Safari 11 with new anti-tracking features, flight status information in Spotlight, more natural voices for Siri and more.

TUTORIAL: How to un-enroll from Apple’s Beta Software Program

macOS High Sierra will release for public consumption this fall across supported Mac models.

If you have spotted any new user features in the latest beta, be sure to send us your findings via tips@iDownloadBlog.com or post them in the comments section below and we’ll update this article as soon as new information becomes available.

  • zebonaut

    Why did they downgrade Siri’s voice?

    • Lars Andersen

      I would guess they are tinkering with her vioce now. It happens often that they make some function really bad while they are working on it to improve it. Sounds odd, but that is what I have experienced a few times.

      • AR

        App Store is Unresponsive with this version and I cannot update anything. Do you have same problem?

      • Lars Andersen

        No. App Store works fine on all three of my iOS 11 beta 4 devices 🙂