Rosetta 2 Deprecation Poses 'Urgent' Risk
An IT services podcast warned that the upcoming sunset of Rosetta 2 with the release of macOS 28 presents a significant risk for organizations. The deprecation of the translation layer for Intel-based apps on Apple Silicon requires an "urgent application dependency inventory." Failure to migrate or update critical applications could lead to emergency upgrade crises when the new operating system is released.
This isn't Apple's first architectural transition. The original Rosetta was introduced in 2005 to translate applications from the PowerPC architecture to Intel processors, a move announced by then-CEO Steve Jobs at WWDC. That translation layer was based on technology licensed from a UK startup, Transitive Corporation. The first Rosetta was supported for roughly five years, bundled in Mac OS X from version 10.4.4 "Tiger" until it was finally removed with the release of Mac OS X 10.7 "Lion" in 2011. This historical precedent set an expectation for Rosetta 2's eventual discontinuation following the transition to Apple Silicon. At WWDC25, Apple officially announced that Rosetta 2 will be fully supported through macOS 27. The translation layer will be largely removed in macOS 28, which is anticipated to be released in the fall of 2027, giving developers an 18-month window from early 2026 to ensure their applications are native. Apple has already begun preparing users for the change. Starting with the macOS 26.4 beta, the operating system now displays a notification to users when they launch an Intel-based application, warning them that the required Rosetta 2 technology will be discontinued in a future OS version. The end of Rosetta 2 won't be absolute. Apple has stated it will maintain a subset of its functionality specifically to support older, unmaintained gaming titles that depend on Intel-based frameworks, though the specifics of this exception remain limited. The removal of the translation layer coincides with the end of support for Intel-based hardware. macOS 26 will be the last major OS version to support Intel Macs, although Apple has committed to providing security updates for those machines for an additional three years.
