The WebExtension API was initially developed for Chrome but has since been also adopted to Firefox, Opera, Vivaldi, and Edge, and has become the universal standard for creating cross-browser add-ons using common technologies like HTML, JavaScript, and CSS. The biggest and most important of the new additions is support for WebExtensions, a technology for creating browser extensions. While Safari didn't get too much of the spotlight at WWDC, Safari 14, scheduled to be released later this fall with iOS 14 and macOS 11, is a release that is packed choke-full with features.
After the flashy presentations of WWDC 2020, Apple has now published more details about some of the new features that are coming to some of its products.