Apple has sent out press invitations to the 2018 Worldwide Developers Conference keynote, scheduled for Monday, June 4 at 10 a.m. (Pacific) at the McEnery Convention Center in San Jose, California. The conference will run Jun 4-8.
WWDC provides an opportunity for developers to learn more about how to create new experiences across Apple's platforms for the Mac, iPhone, iPad, Apple Watch, Apple TV, and HomePod. A range of developer application programming interfaces (APIs) — including SiriKit, HomeKit, HealthKit, GymKit, MusicKit, ResearchKit, and Core ML — give developers ways to help users take command of everything from their health and homes, to how they get around, shop and learn.
Look for announcements about the upcoming versions of macOS, iOS, watchOS, and tvOS. As for what hardware announcements, we can expect, only Apple knows (though my predictions will be arriving soon).