Until 2007, the number of attendees varied between 2,000 and 4,200; however, during WWDC 2007, Steve Jobs noted that there were more than 5,000 attendees. The WWDC events held from 2008 to 2015 were capped, and sold out at 5,000 attendees (5,200 including special attendees).
Since 1998, the conference has generally started with a keynote presentation. It was usually delivered by Jobs, resulting in their becoming termed Stevenotes. After Jobs' 2011 resignation and death, his successor Tim Cook delivered the keynotes.
In 1989, announcing System 7.
In 1991, WWDC saw the first public demonstration of QuickTime.
In 1995, WWDC'95 focused almost fully on the Copland project, which by this time was able to be demonstrated to some degree. Gil Amelio stated that the system was on-schedule to ship in beta form in later summer with an initial commercial release in the very late fall. However, very few live demos were offered, and no beta of the operating system was offered.