While Apple iOS 18.6.1 has just been released, indications already suggest that another update will be coming soon. There is now evidence that iOS 18.6.2 is being tested and may be available soon.
It is expected that the new software will primarily focus on bug fixes, security patches, and enhancements to features that were added in the previous version rather than bringing about significant changes. Even though it could appear to be just a small improvement, this makes it an essential release for iPhone owners to keep an eye on.
The release of iOS 18.6.1 was a bit surprising. In order to solve a very specific problem—the reintroduction of Blood Oxygen tracking on Apple Watches sold in the United States—Apple released the update on August 14, 2025.
But almost immediately after its release, reports began surfacing that the Blood Oxygen app was not behaving consistently for some users. Readings were appearing differently, and the experience varied between devices. That prompted speculation that Apple was already preparing a follow-up patch to refine the implementation.
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Now attention is turning to iOS 18.6.2. Visitor logs monitored by MacRumors show Apple engineers testing this software version, which has been a reliable indicator in the past. The update appears with build number 22G100, compared with the 22G90 build number for iOS 18.6.1.
Separately, a well-known source with a history of accurately spotting upcoming iOS versions has mentioned iOS 18.6.2 by name. This same leaker previously pointed out the existence of iOS 17.5.2 last year, though Apple instead shipped a revised build of iOS 17.5.1 for certain iPads. That history shows that Apple sometimes chooses to reissue an existing version rather than push a full point release, so there remains a chance that 18.6.2 could be delivered in that form.
For now, however, the evidence suggests that Apple is indeed preparing a standalone iOS 18.6.2 release. The timing also points in that direction. Given that the build number jump is small, the update is unlikely to introduce headline features. Instead, the focus looks set on bug fixes, minor adjustments, and additional stability improvements.
The most obvious candidate for changes is the Blood Oxygen feature itself. Because 18.6.1 restored it suddenly after a long absence, Apple may still be working through small issues that appeared once it was rolled out to the wider public. A follow-up patch in the form of iOS 18.6.2 would make sense to ensure that readings are accurate and consistent across Apple Watch models.
Aside from that, iOS 18.6.2 will almost certainly include routine security patches. Apple tends to issue these kinds of mid-cycle updates when a vulnerability has been identified. Since no official release notes are available yet, we can only assume that stability and security remain top priorities in this case.
It is also possible that iOS 18.6.2 will not arrive for every iPhone at once. Reports have suggested that some late-cycle updates are targeted to specific devices or regions depending on the issues being addressed. If the main focus is indeed the Apple Watch integration, then owners of U.S. models may see the update first.
As for the release date, multiple signs indicate that iOS 18.6.2 is imminent. The Forbes report suggested that the update could arrive as soon as the week of August 18. With MacRumors now confirming that the version is showing up in Apple’s testing logs, the timeline points to a release either this week or next. Apple rarely leaves such builds in development for long once they have been spotted.
This means iPhone users should be ready for the update to appear over the air at any time. Like previous patches, it will likely be available through the Settings app under General > Software Update once Apple publishes it. The download size is expected to be small, similar to 18.6.1, since the changes are focused and not feature-heavy.
The question for many is whether it is worth updating immediately. In the case of iOS 18.6.2, the answer is almost certainly yes. These minor point releases are generally safe and bring behind-the-scenes improvements that enhance device security and reliability. Users who already installed iOS 18.6.1 will likely benefit from fixes to the Blood Oxygen feature and other small bugs. Those who have not yet updated to 18.6.1 can safely move directly to 18.6.2 once it becomes available.
Another factor is Apple’s broader software cycle. With iOS 19 already in development and expected later this year, Apple is unlikely to add major new features in late-stage iOS 18 builds. Instead, these updates are about stability, polishing existing functions, and keeping devices secure until the next major release arrives. That makes iOS 18.6.2 a routine but necessary part of the process.
Users who are curious about the differences between iOS 18.6.1 and iOS 18.6.2 will find them to be minor. Version 18.6.1 brought a notable feature back to Apple Watch owners. Version 18.6.2 appears to refine that step, addressing any issues that came up in the first rollout. The build number change from 22G90 to 22G100 highlights that the update is incremental rather than sweeping.
In summary, iOS 18.6.2 is shaping up to be one of those quiet but important updates. It will not change how you use your iPhone day to day, but it will improve the reliability of key features and address behind-the-scenes bugs. With Apple engineers actively testing the build, and with credible reports pointing to a release very soon, iPhone owners should expect to see the update available to download within days.
FAQs about iOS 18.6.2 Update
When is the iOS 18.6.2 release date?
iOS 18.6.2 Update is expected in late August 2025, possibly this week or next, based on Apple’s internal testing logs.
What are the new iOS 18.6.2 features?
It is not expected to introduce major features. The update will focus on bug fixes, security patches, and refinements to the Blood Oxygen app on Apple Watch.
What’s the difference between iOS 18.6.1 and iOS 18.6.2?
iOS 18.6.1 restored the Blood Oxygen feature. iOS 18.6.2 is set to refine it further and fix inconsistencies, while also delivering minor security and performance improvements.
How big will the iOS 18.6.2 download be?
It is likely to be a small update, similar to iOS 18.6.1, since it mainly focuses on patches and stability improvements.
Should I install iOS 18.6.2 right away?
Yes. These smaller updates are generally safe to install immediately and provide essential fixes and security improvements.
