I’ve Run the Numbers and Read the Tea Leaves. Here’s When I Expect Apple to Release iOS 27

Apple announced iOS 27 at its Worldwide Developers Conference in June, and the tech giant has since released multiple beta versions of the software. The betas have brought Siri AI and a handful of other features to the iPhones of developers and beta testers, and you can expect many of those capabilities to land on your iPhone soon. 

Perhaps sooner than you expect.

So far, Apple has only said that it will release the update to the general public this fall, which isn’t the most helpful timeframe. If we look at past Apple events in September and earlier iOS releases, though, we can see a release pattern. Apple usually releases iOS versions a few days after the company’s September event, and I expect that trend to hold this year.

Based on those trends and a little psychic peering, I believe Apple will release iOS 27 on Monday, Sept. 14.

I was right about iOS 26’s release in 2025, iOS 18’s release in 2024 and iOS 17’s release in 2023, so I’m sure I can keep this streak going. But if you want the full breakdown of how I arrived at that date, here’s how.

How my iOS 27 release date math works

Usually Apple releases the next iOS update soon after the September event and the company is set to hold its “Surprise and shine” event on Wednesday, Sept. 9. While Apple doesn’t usually announce the release of iOS versions, the company has been pretty consistent with its release schedule over the years. 

After most of Apple’s September events, the company releases the next iOS within a week. In 2025, for example, Apple’s event was held on Sept. 9 and the company released iOS 26 on Sept. 15. And in 2024 Apple’s event was held on Sept. 9 and iOS 18 was released seven days later on Sept. 16.

There’s only been one year over the past decade where it took longer than a week for Apple to release the next iOS version – 2019. That year, Apple released the next iOS version nine days after its September event.

In that same timeframe, most of the iOS releases were either five, six or seven days after the September event. Apple has also released the past five iOS versions on the Monday following its September events. This could be the new norm, with Apple releasing future iOS versions on the Monday after its September events moving forward. 

So it’s most likely that Apple will release iOS 27 on the following Monday, Sept. 14.

For more on iOS 27, here are my first impressions of the beta and what to know about iOS 27 before Apple brings it to your device later this year.

Zachary McAuliffe

Senior writer

Zach began writing for CNET in November, 2021 after writing for a broadcast news station in his hometown, Cincinnati, for five years. You can usually find him hanging out with his wife, son and dog. You can reach him at zmcauliffe@cnet.com.

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