Operating Systems

Beta software, also referred to as a preview, seed, or release candidate, is a pre-release version of software that’s still under development and not yet released to the public. For complete instructions, read Installing Apple Beta Software

macOS 27.2 beta 2

  • ReleasedSeptember 21, 2026
  • Build26B5091g
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Release Notes

tvOS 27.2 beta 2

  • ReleasedSeptember 21, 2026
  • Build24K5093g
  • CompatibilityApple TV 4K (2nd generation or later)

Release Notes

visionOS 27.2 beta 2

  • ReleasedSeptember 21, 2026
  • Build24N5093f
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Release Notes

watchOS 27.2 beta 2

  • ReleasedSeptember 21, 2026
  • Build24S5091f

Release Notes

macOS 27.0

  • ReleasedSeptember 14, 2026
  • Build26A428
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Release Notes

tvOS 27.0

  • ReleasedSeptember 14, 2026
  • Build24J361
  • CompatibilityApple TV 4K (2nd generation or later)

Release Notes

visionOS 27.0

  • ReleasedSeptember 14, 2026
  • Build24M362
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Release Notes

watchOS 27.0

  • ReleasedSeptember 14, 2026
  • Build24R364

Release Notes

macOS 26.6.2

  • ReleasedAugust 17, 2026
  • Build25G83
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visionOS 26.6.1

  • ReleasedAugust 17, 2026
  • Build23O780
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Device Support for macOS 27.0 beta

Install Device Support for macOS 27.0 beta if installing the macOS Seed in a virtual Machine fails on a host Mac.

  • ReleasedJuly 31, 2026
  • Build2050A4a
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tvOS 26.6

  • ReleasedJuly 27, 2026
  • Build23L773
  • CompatibilityApple TV HD or later
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Release Notes

watchOS 26.6

  • ReleasedJuly 27, 2026
  • Build23U67

Release Notes