Media Release — SPX is pleased to announce Scott McCloud, Bill Griffith and Kathryn Immonen as guests at SPX 2015. This is in addition to the previously announced guests Kate Beaton, Luke Pearson, Noelle Stevenson, Michael DeForge, Gemma Correll, Noah Van Sciver, Matt Bors, Lilli Carré, Theo Ellsworth, C. Spike Trotman, Jennifer Hayden and Stuart…