whats new about ios 16.5.1 (c)

See here for specifics on the 16.5.1(c) update. click here ➜ About the security content of Rapid Security Responses for iOS 16.5.1 and iPadOS 16.5.1 - Apple Support

The (c) update, fixes an issue with Safari that could prevents some websites from displaying properly.

No new features, as it is a security update.