Apple's software engineers are testing iOS 26.4.1, according to MacRumors visitor logs, which have tracked iOS version leaks for years. This minor update likely addresses bug fixes and security patches, with a release expected this week or next. The update timeline aligns with Apple's recent push into healthcare technology, particularly its Studio Display XDR's FDA-cleared medical imaging feature. *9to5Mac* reported this week that the DICOM-compatible display calibration tool, which enables radiologists to view diagnostic images in apps like Visage 7, launched this week.