https://www.cnet.com/news/new-ipad-feature-to-compete-with-laptops-could-come-in-ios-13/

Viticci and Troughton-Smith left plenty of wiggle room in their statements. Both appear to have knowledge that Apple has been working on the feature, but since they aren't on the iOS product team they obviously can't confirm whether it will officially make it into iOS 13. CNET reached out to Apple for comment and will add to this story when there's additional information to report.

Viticci said he heard the report about iPad getting mouse support from "a couple of people a few months ago." It was in the context of getting a mouse cursor on the iPad as an "accessibility feature." He suggested that it would be part of AssistiveTouch, which helps people with motor-skill limitations to operate their iOS devices more easily.