The iPadOS beta is out, and it has one killer feature — mouse support. Not only can you use any Bluetooth mouse or trackpad to control the text-selection cursor on the iPad, you can use the mouse just like you would on a Mac — clicking buttons anywhere in the entire iPad user interface.
The feature is not on by default. It’s not even a regular checkbox. To enable mouse and trackpad support on your iPad, you have to dig into the Accessibility settings.