Two buttons makes me think early prototype, but two point touch makes me think DS Advanced.
Really, I have nothing else to add.
Actually, now that I think about it, looking at it and seeing how the controls are segmented from the LCD screen body, I wonder if Nintendo is thinking about another tactile input method in addition to touch screen. For example, you could use the right side as a throttle, and twisting it around would affect gameplay.
Just an idea. Who knows.