According to the Wizard Con site, Billy has cancelled due to filming. SOURCE
This video was just found, thanks to our pal, Kay Griffin, of an interview Billy did while he was in new Zealand last fall! Enjoy!
Billy promoting Ecstasy at the world premiere: ”Rob Haydon, Adam Sinclair and Billy Boyd at the World Premiere of Irvine Welshs Ecstasy at Ministry Of Sound on April 17, 2012 in London, England”