https://wccftech.com/download-watchos-7-4-1-and-macos-big-sur-11-3-1-now-available/

Apple has released watchOS 7.4.1 and macOS Big Sur 11.3.1 for users around the world. Here is everything that is new.

iOS 14.5.1 and iPadOS 14.5.1 was released a while back with a small bug fix related to App Tracking Transparency. But apart from that, Apple also released watchOS 7.4.1 and macOS Big Sur 11.3.1 update.