https://wccftech.com/ios-14-features-advanced-mouse-support/

Digging into code of iOS 14 features, it has been revealed that the upcoming OS for iPhone and iPad will include advanced mouse support.

It was revealed by The Information that Apple is working on a brand new Smart Keyboard for the iPad Pro which will include a trackpad. Now, 9to5Mac has jumped into the picture and confirms that is the case thanks to the iOS 14 code they managed to get their hands on.