iMac
iMac (Retina 5K, 27-inch, 2020)
Not on Apple's list for macOS Golden Gate 27
The newest release we've verified for it is macOS Tahoe 26. Apple sometimes releases security updates for older versions too — see Apple's security releases page.
macOS releases it runs
-
macOS Tahoe 26
Released Sep 2025 · latest 26.7.1
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macOS Sequoia 15
Released Sep 2024 · latest 15.8.1
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macOS Sonoma 14
Released Sep 2023 · latest 14.8.9
Only releases checked against a source are listed. Osnivo currently tracks macOS Sonoma 14 and later.
At a glance
- Platform
- Mac · macOS
- Family
- iMac
- Introduced
- 2020
Sources for this page
Last verified 8 Oct 2026
- 1 Identify your iMac model - Apple Support support.apple.com
- 1 macOS Tahoe 26 is compatible with these computers - Apple Support support.apple.com
- 1 Apple security releases - Apple Support support.apple.com
- 1 macOS Sequoia is compatible with these computers - Apple Support support.apple.com
- 1 macOS Sonoma is compatible with these computers - Apple Support support.apple.com
- 1 Apple security updates (2022 to 2023) - Apple Support support.apple.com