That's because it's invariably our first, official glimpse of what's in store for the software those devices will each run.
Apple is expected to announce iOS 12 and the next version of macOS at WWDC.
WWDC 2018 will be held at the McEnery Convention Center, the same location as past year.
There will also be up to 350 WWDC Student Scholarships available, which provides free tickets for aspiring young developers to attend the conference.
This is the second year that Apple will host WWDC at the McEnery Convention Center. Tickets are issued through a random selection process, and developers will be notified of application status by March 23 at 5 p.m. PDT. Last year, Apple announced iOS 11 as well products like the HomePod at the event. Apple will then randomly select developers who can then purchase a ticket for $1,599. New for 2018 will be HomePod, too, with Apple's freshly-released smart speaker intended as a hub not only for smart home technology but Siri interactions too.