Apple has released the iOS 13.4 and iPadOS 13.4 for the iPhone and iPad, bringing with it new features as well as other improvements.
For the iPhone, iOS 13.4 introduces new Memoji stickers and iCloud Drive folder sharing from the Files app. For the iPad, iPadOS 13.4 introduces support for mouse and trackpad for better precision and navigating the system with Multi-Touch gestures. Like the iPhones, it also brings new Memoji stickers and iCloud Drive folder sharing.
Aside from the new features, the update contains bug fixes and improvements.
To check for the update, go to Settings –> General –> Software Update. The download is close to 1GB so make sure to check your internet connection and data allocation.