Apple's Worldwide Developers Conference is the annual show dedicated to all things software, and it's a place for everyone who builds Apple software to get together. We're talking phones, tablets, laptops, smartwatches and even mixed reality headsets. The keynote itself is usually where Apple previews all the software that'll arrive later this year, and updates developers on all the goings on in Apple's multiple operating systems. There have been some hardware reveals in the past, but those are rare, and it's unlikely that we'll see anything substantial ahead of the September iPhone event. WWD