The author guest list for that one is truly amazing.
And, there's still more to be announced, including several more Tor Books and Del Rey authors (both publishers will be exhibiting). Penguin/Ace will have a presence but aren't exhibiting.
Although, even with the others to be announced, I think it is a toss-up between Jim and Charlaine Harris as to who will draw the bigger crowd. Charlaine will be in Scottsdale on tour in Mid-May, so Jim's signing lines will likely be longer at the convention.
As programming gets fleshed out, I'll post details in the Phoenix Comicon thread.
Lee Whiteside
Books and Authors Manager, Phoenix Comicon