Deep Dive on macOS 27 and Siri AI

When David Sparks texted Stephen Robles a link to his latest YouTube video, he expected a modest response. Instead, the video — a few minutes of Sparks talking to his camera about the iPhone Duo — racked up over 430,000 views. "I'm so mad, David," Robles said. "Like this is just… I don't understand." Sparks was equally stunned: "That was the production of this thing." The conversation quickly turned to what makes a video break out — a topic that felt like a warm-up for a longer discussion about what actually changed in macOS 27, iOS 27, and the arrival of Siri AI.

The End of Rosetta and the Snow Leopard Year

One of the most quietly consequential changes in macOS 27 is a deadline. This is the last version of macOS that will support Rosetta, the translation layer that lets Intel apps run on Apple Silicon. Next year, in macOS 28, those apps simply will not open. Apple has added a new section in System Settings → General → About where users can see a list of "Intel-Based Apps" still running under Rosetta. Robles discovered several he didn't expect, including the product portal for Isotope audio software and an app called Producer's Best Friend. "You got a year," Sparks said. "This is not urgent, but if you've got a mission critical app showing up in that list, you have a year to nag the developer or find a replacement."