Apple has today released iOS 11.3.1 and a new security update for macOS High Sierra 10.13.4.
iOS 11.3.1 addresses a recently identified problem that could cause third-party repairs done on iPhone 8 models using aftermarket parts to disable the touch functionality of the screen.
According to the release notes via MacRumors, iOS 11.3.1 also includes some unspecified security improvements:
iOS 11.3.1 improves the security of your iPhone or iPad and addresses an issue where touch input was unresponsive on some iPhone 8 devices because they were serviced with non-genuine replacement displays.
Note: Non-genuine replacement displays may have compromised visual quality and may fail to work correctly. Apple-certified screen repairs are performed by trusted experts who use genuine Apple parts. See support.apple.com for more information.
According to the macOS High Sierra 10.13.4 release notes via MacRumors:
Security Update 2018-001 is recommended for all users and is meant to improve the security of macOS. The update addresses two security vulnerabilities related to Crash Reporter and LinkPresentation, both of which could be used maliciously to gain access to a Mac. A Safari 11.1 update is also included, with fixes for WebKit vulnerabilities.
It is unlikely that either of these releases will include any changes for blind or low vision users. However, if you encounter any fixes, changes or regressions in your own testing, please let us know by posting a comment below.