Apple is now on the third round of its 26-gen operating system updates, including developer builds of its iOS 26.6 and others alongside some 26.5.2 releases.
Apple is in the phase of the year where it has two developer beta tracks running at the same time. While the main attention is on the 27-generation, it is also still building for its current-gen operating systems.
The third developer betas landed after the second, which were distributed on June 15. The first round came out on May 26.
- iOS 26.6 build 3 is 23G5052d replacing 23G5043d, replacing 23G5028e
- iPadOS 26.6 build 3 is 23G5052d, replacing 23G5043d
- watchOS 26.6 build 3 is 23U5049c, replacing 23U5040d
- visionOS 26.6 build 3 is 23O5752d, replacing 23O5743c
- tvOS 26.6 build 3 is 23L5753c, replacing 23L5744d
- macOS Tahoe 26.6 3 is 25G5052e, replacing 25G5043d
At the same time, Apple has included some releases for:
- macOS 26.5.2 (23F84)
- iOS 26.5.2 (23F84)
- iPadOS 26.5.2 (23F84)
When there are two developer beta tracks undergoing testing, the next-generation version will include feature changes while the current-gen track is more about performance and security.
The first iOS 26.6 beta build included a new feature for Contacts that notifies users if they reach the maximum of 20,000 blocked listings. There was also a security fix for Apple Maps.
AppleInsider and Apple strongly recommend that users don't put beta operating systems or beta software onto their primary or "mission-critical" devices due to the potential for data loss and other issues. Ideally, they should retain backups of their data and try to use spare and secondary hardware for testing purposes.
The more risk-averse users should wait for public beta builds, which are more battle-hardened and less prone to errors.
Find any changes in the new builds? Reach out to us on X at @AppleInsider or @Andrew_OSU, or send Andrew an email at [email protected].
