From what I read because I have been wondering the same thing, since the cast has been appearing at comic con since season one there is a good chance that they'll be there this year as well.
The cast of 30 Years of Comic Strip - 2012 includes: Stephen Mangan as Narrator
The cast of Comic-Con All Access 2012 - 2012 includes: Geoff Keighley Katie Linendoll Lindsey Sporrer as herself
The cast of Bungled - 2012 includes: Trinia Dotson Eljay The Comic
The cast of My Life As a Comic - 2012 includes: Bonner Doemling as Night Ronin Sid Motaghi as Tom Costa Nicholas as Cosmos Edward Oporto as Frank
The cast of Them Idiots Whirled Tour - 2012 includes: Reno Collier as Himself - Host Bill Engvall as Himself - Comic Jeff Foxworthy as Himself - Comic Larry the Cable Guy as Himself - Comic
The cast of Blood Oath - 2012 includes: Nick Fenske as Capo
The cast of Blood Redemption - 2012 includes: Tom Buchner as Mark
The cast of Blood and Chocolate - 2012 includes: Tamara Horine as Woman
The cast of Carnival of Carnage - 2012 includes: Ruth Lehane as The Clown Esther Suess as The Girl
The cast of Blood on Music Row - 2012 includes: Drew Glick as Dante
The cast of Stranger in Blood - 2012 includes: Michael Soldier as Doctor Valerie Weak
The cast of Blood In - 2012 includes: Cat Kiiza as Kendra Ivana Morais Wallatta Nicholson as Kym