Yes, we know we’re still on macOS 26. In 2025, Apple announced macOS 27 would be the last version to support Rosetta for most Intel-based apps. (Beyond that, Apple will maintain a subset of Rosetta functionality for older, unmaintained gaming titles.) This fact has become relevant because in the just-released macOS 26.4, when you launch apps that rely on Rosetta for Intel compatibility, macOS may start warning you that they won’t open in a future version of macOS. These warnings are just reminders—nothing will change until you upgrade to macOS 28, probably in late 2027 or 2028, giving you plenty of time to find replacements. To identify Intel-based apps now, open System Information from the Utilities folder in your Applications folder, select Applications in the sidebar, and click the Kind column header to sort all your Intel apps together. iMazing’s free Silicon app does the same thing with a nicer interface.

(Featured image based on an original by iStock.com/Kurgenc)

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Social Media: Running macOS 26.4? You may start seeing warnings about Intel-based apps not opening. They won’t stop working until macOS 28, but now’s the time to find replacements. Here’s how to identify which apps need attention.