I know it still more than 6 months away but the lineup is solid so far and they just added Karen Gillan from Dr Who which is awesome
http://www.wizardworld.com/home-ch.html
Rafael Albuquerque
Jim Cheung
Geof Darrow
Leinil Yu
Rafael Grampá
Neil Adams
Andrés Guinaldo
Greg Horn
Stan Lee
Salvador Larroca
Rags Morales
Emanuela Lupacchino
James O'Barr
Mike Zeck