This looks big. Basically its a neural network that learned how to communicate in English from scratch. Mind you, its no Shakespeare and frankly it can only answer relatively simple queries. But fact that it can now respond logically to questions like: "Is mother older than son?" When provided with information like: "Mother is older than father, father is older than son." Puts it closer to Turing test capable than any other AI.
Link to original paper
Link to original paper