Apple has released a ton of updates today, including iOS 13.4, iPadOS 13.4, watchOS 6.2, HomePod 13.4, tvOS 13.4, and macOS 10.15.4.
The headlining feature seems to be iPadOS and the pointer support it brings. With this update, you can use a mouse or trackpad on your iPad.
The updates bring a flood of bug fixes and improvements as well.
Make sure you update your devices to stay up to date.