I'm sure they'll find a regular fill-in artist. I don't mean that as a dig, it's just the way it is. Rather like that other artist who filled in Cliff Chiang at times.
I'm looking forward to this. I assume it will be more like Superman/Wonder Woman but with the focus more on WW. I didn't *hate* the Azzarello version, but I didn't necessarily care for the horror elements. First Born, put some skin on, dammit!