Apple's software engineers are actively testing iOS 26.5.1, according to MacRumors visitor logs that accurately predict upcoming iOS versions. This minor update will address bugs and security vulnerabilities, likely arriving by the end of next week. The update comes as Apple maintains its regular maintenance cycle for iOS 26.x releases.

Testing of iOS 26.6 has also intensified, with a first beta expected in June. Like its predecessor, iOS 26.6 will likely be a minor update rather than a feature release. Last year, Apple released the first beta of iOS 18.6 three days after WWDC 2025 ended, suggesting a similar timeline for the upcoming beta.

Apple's attention is shifting toward iOS 27, set for unveiling during the WWDC 2026 keynote on Monday, June 8 at 10 a.m. Pacific Time. The company continues its pattern of releasing minor maintenance updates between major version launches, with iOS 26.5.1 representing the next incremental step before the larger iOS 27 debut.