Rosetta ends for Intel-only Mac apps at macOS 27 as Apple sets a hard deadline
Apple is winding down Rosetta, the translation layer that let Intel-only Mac apps run on Apple silicon since 2020. From macOS 26.4, users launching non-native apps may see an update notification, and macOS 27 is the last release that runs them at all, except older unmaintained games.
Why it matters
Rosetta has quietly kept Intel-only Mac software usable for six years, which also removed urgency from finishing the Apple silicon transition. A hard cutoff changes that calculus: any macOS app still shipping Intel-only after macOS 27 simply stops running, not just runs slower, so this is a compatibility deadline rather than a performance recommendation.
What changed
Apple announced that macOS 26.4 or later may show users a system notification when they launch an app that depends on Rosetta, telling them to update to an Apple silicon native version. macOS 27, shipping this fall, is the final release to support Rosetta at all, after which Intel-only apps will not run on Apple silicon Macs. Apple is keeping one exception: Rosetta support for older, unmaintained gaming titles built on Intel-based frameworks continues. Developers without a native build are told to move immediately and ship a universal binary, which runs natively on both Apple silicon and Intel-based Macs. Developers who already ship a native version are told to reach out to users directly and get them onto that build before macOS 27, to avoid the new notifications and the eventual cutoff.
In an interview
A candidate could cite this as a concrete example of a platform vendor moving a compatibility shim from indefinite support to a dated sunset, and explain why shipping a universal binary, rather than relying on translation, is the only way to stay unaffected by either the macOS 26.4 notification or the macOS 27 cutoff.
Just read this? Test yourself on what you have been reading.
Read the original → developer.apple.com
- #apple-silicon
- #rosetta
- #macos
- #universal-binary
- #deprecation
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