This story is part of, CNET's complete coverage from and about Apple's annual developers conference.
The chance to buy $1,599 tickets for Apple's, which usually attracts more than 5,000 developers, was this year decided through a lottery. But people might still be able to buy a ticket to Apple's annual confab.
Those who were chosen through the lottery had until April 14 to actually purchase a ticket. According to 9to5Mac, Apple has been reaching out to those who didn't win to give them a chance to purchase unclaimed tickets. Apple did not return a request for comment, but we'll update this post if we hear back.
The conference is a popular destination among Apple fans, as the company uses it as a stage to make product announcements. Past events have included unveilings of new MacBook Air models and updates to iOS, Apple's mobile operating system.
The event will be held at San Francisco's Moscone Center West from June 2 to 6. Tickets in past years have sold out in minutes, so this year, the company moved to a lottery format to open up attendance.
The rumor mill around Apple's plans always churns in the lead-up to the event. This year, there has been speculation that the company will unveil iOS 8, expected to have a heavy bent in, or even a with larger screens.