WWDC is one of the biggest events in Apple's yearly calendar, second in importance only to the new iPhone reveal in the autumn. In this article we round up everything you need to know about WWDC 2021, from the date and time the keynote will kick off, to the range of products and software updates that will be revealed on the day (or night, depending on where you live). We've also dissected the announcement artwork for clues about what to expect. What is WWDC? WWDC stands for Worldwide Developers Conference. It's an event Apple holds every year for the benefit of its developer partners - the people who create the software that runs on the Mac, iPhone and other Apple platforms.