Just last year they announced new iMac, Macbook Pro, Homepod and gave a sneak peek at iMac Pro.
Hardware announcements sometimes do happy at WWDC. I'm guessing they are not ready yet, so we just gotta hold out until fall event.
"typically"
Not so sure about this. WWDC 2017 (last year) had all of these announcements:
- New iMac Pro
- New iPad Pro 10.5
- New HomePod
- Updated iMac
- Updated MacBook
- Updated MacBook Pros
That was just last year. Hardware announcements overall are do not happen every time.