Apple has today released iOS 11.2.1 to the public, bringing a fix for a zero-day security exploit in iOS 11.2 that allowed unauthorized access to HomeKit accessories.
This vulnerability was patched server-side last week by Apple, but today's release now fixes this on the operating system itself.
As iOS 11.2.1 appears to be mainly a security update, we do not expect this release to contain any accessibility improvements for blind and low vision users. However, if you do notice any accessibility improvements; regressions; or changes, please do let us know by posting a comment with your findings.
iOS 11.2.1 is available via Over-the-Air Update (Settings > General > Software Update) or via iTunes on a Mac or PC.