Apple's Worldwide Developer's Conference (WWDC) starts up next week, and Twitter briefly had tickets available for an open house. The conference is described by Twitter's announcement as ìtech talks, food and beer with our iOS and native applications engineering team!î The Twitter meet-and-greet is scheduled for the first day of WWDC on June 11 between 6:30 PM and 9:30 PM. At the time of this writing, no tickets are available, but more may become available between now and the conference.