Depends on what kind of AI you're talking about

. Proper AI will only improve with larger neuron nets. Fake AI that's used in games might see a slight boost as previously impossible techniques become attainable but the major steps will still be made by intelligent design rather than raw power. (Fake) AI is not a problem of scale, it's as problem of application, namely to find new algorythms that help the AI. Unlike, say, graphics which can easily be advanced by increasing polygon counts and shader capabilities.