SAN FRANCISCO , April 16 / PRNewswire / -- The call for submissions for the 2009 Game Developers Conference ( R ) Austin ( GDC Austin ) is now open . The submissions to present lectures , roundtables and full day tutorials will be accepted for review by the GDC Austin advisory boards through Friday , May 8th . Presented by Think Services , organizers of the industry-leading Game Developers Conference ( R ) ( GDC ) , GDC Austin is a four-day event taking place at the Austin Convention Center in Austin , Texas , September 15-18 , 2009 .