How to Check Your Mac's Manufacture Date in macOS 27

If you installed macOS 27 Golden Gate, here's a way to find out when your Mac was manufactured. Apple has restored access to information that effectively disappeared when it randomized its serial numbers a few years ago. On your Mac, go to System Settings ➝ General ➝ About, then click "Regulatory Certification" under the System Report button. The certificate will show with a new "Date of Manufacture" field at the bottom. You used to be able to decode the serial number on an Apple device to find out when and where it was made. That changed in 2021, when Apple began adopting randomized serial numbers without encoded manufacturing details. That left owners of newer Macs with no similarly straightforward way to determine when their machine was made – until macOS 27 arrived. The spot was made by MacRumors forum member pdfu. Another forum member said that the displayed date they saw on their certificate corresponded to their Mac's logic board rather than the date the complete machine was assembled. That logic board had been replaced though, suggesting that's where the date of manufacture is stored. The regulatory certification first appeared during the macOS 27 beta cycle and it hasn't, to our knowledge, been highlighted by Apple. Popular StoriesHere's When iOS 27 Rolls Out Today in Every Time Zone [Update: It's Out]Sunday September 13, 2026 3:00 am PDT by Eric SlivkaUpdate 10:04 a.m.: iOS 27 is rolling out now, though it may take a bit for all users to see it, so keep checking! Apple is about to release iOS 27, which will finally deliver more advanced Siri AI capabilities as well as a variety of other refinements, improvements, and new features to iPhones. It's Apple's biggest software update of the year, and Apple announced at Wednesday's iPhone event...Apple's Siri AI Can Be Swapped Out for Claude, ChatGPT, Code ShowsMonday September 14, 2026 4:37 am PDT by Tim HardwickCode sleuth "pdfu" has uncovered iOS 27 and macOS Golden Gate private frameworks that show Apple has designed its new Siri architecture to work with third-party AI models at what appears to be a surprisingly deep level. One mechanism called Model Delegation allows Claude to appear as a Siri extension in the same way as the existing built-in ChatGPT extension. In pdfu's video, shared on X,...Apple Announces macOS Golden Gate Release DateThursday September 10, 2026 12:15 am PDT by Joe RossignolApple this week announced that macOS 27, also known as macOS Golden Gate, will be released to all users with a compatible Mac on Monday, September 14. iOS 27, iPadOS 27, watchOS 27, tvOS 27, and visionOS 27 will be released on the same day. macOS Golden Gate features Siri AI, design improvements, performance enhancements, and more. A developer beta has been available since June, while a...