The sequel to Touch will be coming to you from NeWest Press in 2010. The working title is Grayling Cross. Also, the lovely people at NeWest Press are now featuring readers' notes for the novels they have published. The readers' notes for Touch are online, with podcasts to follow.
I recently spoke at the World Fantasy Convention on the topic of supernatural detectives. I don't remember exactly what I said, but some people blogged the event and, going by them, I seem to have been reasonably coherent. Yay!