[av_heading heading='Kweli, Gyllenhaal, Powers, Crystal Castles, Boulevards Added to SXSW ' tag='h2' style='blockquote modern-quote' size='' subheading_active='subheading_below' subheading_size='15' padding='10' color='' custom_font=''] Written by: Matthew McGuire [/av_heading] The first round artist announcement includes the new incarnation of Toronto electronic duo Crystal Castles, London hardcore punk band Frank Carter & The Rattlesnakes, as well as many more talented artists. SXSW Music has extended the application deadline through this Sunday, October 25 at 11:59PM EDT. Filmmakers have until November 3 to get your film in by the SXSW Film late submissions deadline. In addition, the event has also announced speakers including: rapper and Javotti Media