He’ll only be focusing on the design/basics. He is redesigning all of the themes on top of the Genesis 2.0 HTML5 Sample theme. So all of the themes will be designed on top of an HTML5 ready theme, which means you’ll get everything that comes with it. Anything beyond that will probably need to be added with your own custom code or a plugin. Some people have talked about creating plugins to handle schema, so we’ll see.
It’s all still new to a lot of us, so it will probably take some time before the Genesis Community has more info on how to do this.