IDG World Expo today announced that the opening feature presentation at Macworld Conference & Expo in Boston, which takes place July 12-15, will feature the members of the original Macintosh design team. New York Times tech columnist David Pogue will host the panel, “The Macintosh at 20—A Celebration of 20 Years of Innovation.” Attendees will hear from Jef Raskin, Andy Hertzfeld, Bill Atkinson and Jerry Mannock, who will share anecdotes and perspectives on the development of the Macintosh. This panel presentation will lead off a feature presentation line-up that also includes photojournalist Rick Smolan and the return of Macworld’s geek trivia contest, the MacBrainiac Challenge. Apple has said that it will not participate in Macworld Expo Boston.