Software versions appearing in the website’s analytics logs suggest Apple is internally testing iOS 17.3.1.

Analytics logs have previously shown upcoming iOS versions, from iOS 17.0.3 to 17.3.1, before their release, suggesting iOS 17.3.1 could eventually be published.

iOS 17.3.1 is expected to be a minor update addressing software bugs and/or security vulnerabilities. iOS 16.3.1 arrived on February 13 last year, and iOS 15.3.1 on February 10, 2022. If Apple follows a similar schedule, iOS 17.3.1 could arrive around the following week.

The larger iOS 17.4 update remains in beta testing and includes many features, such as major EU App Store changes.