what was the amin highlight of wwdc 2020

The main highlight of WWDC 2020 was the introduction of Apple Intelligence, a personal intelligence system that brings powerful generative models to Apple's platforms. This system enhances iOS, iPadOS, and macOS with new capabilities for understanding and generating language and images, helping users take actions with rich awareness of their personal context. It is deeply integrated into features and apps across the system and built with privacy from the ground up.

For more details, you can refer to the Platforms State of the Union session.