Apple CEO Tim Cook delivers the keynote address during the 2020 Apple Worldwide Developers Conference at Steve Jobs Theater in Cupertino, California on June 22, 2020. WWDC, held virtually for the first time, runs through June 26. [Photo/Agencies]

Apple kicked off its all-online Worldwide Developers Conference (WWDC) on Monday in Cupertino, California. It unveiled its new software for iPhone, iPad, Apple Watch and Mac, as well as announced Mac's transition to Apple silicon.

Here are highlights from Apple's WWDC 2020.

Apple CEO Tim Cook delivers the keynote address during the 2020 Apple Worldwide Developers Conference at Steve Jobs Theater in Cupertino, California on June 22, 2020. [Photo/Agencies]

Apple CEO Tim Cook delivers the keynote address during the 2020 Apple Worldwide Developers Conference at Steve Jobs Theater in Cupertino, California on June 22, 2020. [Photo/Agencies]

Craig Federighi, Apple's senior vice president of software engineering, speaks at Apple Park in Cupertino, California in this still from the 2020 Apple Worldwide Developers Conference keynote video. [Photo/Agencies]

Apple's Meg Frost introduces new features to Apple Maps on iOS 14 during the keynote address at the 2020 Apple Worldwide Developers Conference. [Photo/Agencies]

Apple's Emily Schubert shows how to unlock and start a car by iPhone with iOS 14 at the 2020 Apple Worldwide Developers Conference. [Photo/Agencies]

Craig Federighi, Apple's senior vice president of software engineering, speaks in front of a screen with new features of the iPadOS 14. [Photo/Agencies]

Apple's Kevin Lynch introduces new features of watchOS 7 at the 2020 Apple Worldwide Developers Conference. [Photo/Agencies]

Craig Federighi, Apple's senior vice president of software engineering, introduces macOS Big Sur at Apple Park in Cupertino, California during the 2020 Apple Worldwide Developers Conference keynote video. [Photo/Agencies]

Apple's Cindy Lin introduces tvOS14 during the 2020 Apple Worldwide Developers Conference keynote video. [Photo/Agencies]

Johny Srouji, Apple's senior vice president of hardware technologies, introduces Apple silicon during the keynote address at the 2020 Apple Worldwide Developers Conference at Apple Park in Cupertino, California. Apple plans to ship the first Mac with Apple silicon by the end of the year and complete the transition in about two years. [Photo/Agencies]