per wozniak:

http://www.macworld.co.uk/apple-business/news/?newsid=3357801&pagtype=allchandate

excerpts:

Wozniak thinks that the future is in voice technology. “I speak to my phone so many times. But so often it won’t understand me. That’s going to be improved in the future. If I had a son going into computer science right now, I’d say go into voice. That would be an area to explore for the innovative future.”

and:

When asked about the iPhone 5, Wozniak said: “I could tell you about iPhone 5, but i’d have to kill you.”